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    <title>Last contents uploaded</title>
    <link>http://web20live.tamtamy.com/tamtamy</link>
    <description>A feed for being up to date with latest contributions by the community</description>
    <item>
      <title>l.zappa posted Stefan Andreasen (Kapow)</title>
      <link>http://web20live.tamtamy.com/tamtamy/content/details-3011.action</link>
      <description>[stefan_andreason_low.flv ]</description>
      <pubDate>Tue, 14 Apr 2009 23:28:11 GMT</pubDate>
      <guid>http://web20live.tamtamy.com/tamtamy/content/details-3011.action</guid>
      <dc:creator>l.zappa</dc:creator>
      <dc:date>2009-04-14T23:28:11Z</dc:date>
    </item>
    <item>
      <title>l.zappa posted Bob Buch (Digg)</title>
      <link>http://web20live.tamtamy.com/tamtamy/content/details-2873.action</link>
      <description>[bob_buch_final_low.flv ]</description>
      <pubDate>Mon, 06 Apr 2009 09:03:22 GMT</pubDate>
      <guid>http://web20live.tamtamy.com/tamtamy/content/details-2873.action</guid>
      <dc:creator>l.zappa</dc:creator>
      <dc:date>2009-04-06T09:03:22Z</dc:date>
    </item>
    <item>
      <title>l.zappa posted Simon Wardley (Canonical Ltd.)</title>
      <link>http://web20live.tamtamy.com/tamtamy/content/details-2872.action</link>
      <description>[simon_wardley_final_low.flv ]</description>
      <pubDate>Mon, 06 Apr 2009 09:01:59 GMT</pubDate>
      <guid>http://web20live.tamtamy.com/tamtamy/content/details-2872.action</guid>
      <dc:creator>l.zappa</dc:creator>
      <dc:date>2009-04-06T09:01:59Z</dc:date>
    </item>
    <item>
      <title>l.zappa posted Kristina Halvorson (Brain Traffic)</title>
      <link>http://web20live.tamtamy.com/tamtamy/content/details-2871.action</link>
      <description>[kristina_halvorson_final_low.flv ]</description>
      <pubDate>Mon, 06 Apr 2009 08:57:52 GMT</pubDate>
      <guid>http://web20live.tamtamy.com/tamtamy/content/details-2871.action</guid>
      <dc:creator>l.zappa</dc:creator>
      <dc:date>2009-04-06T08:57:52Z</dc:date>
    </item>
    <item>
      <title>l.zappa posted Marc Davis (Yahoo!)</title>
      <link>http://web20live.tamtamy.com/tamtamy/content/details-2813.action</link>
      <description>[marc_davis_final_low.flv ]</description>
      <pubDate>Fri, 03 Apr 2009 15:21:59 GMT</pubDate>
      <guid>http://web20live.tamtamy.com/tamtamy/content/details-2813.action</guid>
      <dc:creator>l.zappa</dc:creator>
      <dc:date>2009-04-03T15:21:59Z</dc:date>
    </item>
    <item>
      <title>l.zappa posted Adam Gross (Saleforce.com)</title>
      <link>http://web20live.tamtamy.com/tamtamy/content/details-2812.action</link>
      <description>[adam_gross_final_low.flv ]</description>
      <pubDate>Fri, 03 Apr 2009 15:13:53 GMT</pubDate>
      <guid>http://web20live.tamtamy.com/tamtamy/content/details-2812.action</guid>
      <dc:creator>l.zappa</dc:creator>
      <dc:date>2009-04-03T15:13:53Z</dc:date>
    </item>
    <item>
      <title>l.zappa posted Adam Gross (Saleforce.com)</title>
      <link>http://web20live.tamtamy.com/tamtamy/content/details-2799.action</link>
      <description>[CIMG0013.jpg ]</description>
      <pubDate>Fri, 03 Apr 2009 01:48:23 GMT</pubDate>
      <guid>http://web20live.tamtamy.com/tamtamy/content/details-2799.action</guid>
      <dc:creator>l.zappa</dc:creator>
      <dc:date>2009-04-03T01:48:23Z</dc:date>
    </item>
    <item>
      <title>l.zappa posted Adam Gross (Saleforce.com)</title>
      <link>http://web20live.tamtamy.com/tamtamy/content/details-2798.action</link>
      <description>[CIMG0011.jpg ]</description>
      <pubDate>Fri, 03 Apr 2009 01:48:16 GMT</pubDate>
      <guid>http://web20live.tamtamy.com/tamtamy/content/details-2798.action</guid>
      <dc:creator>l.zappa</dc:creator>
      <dc:date>2009-04-03T01:48:16Z</dc:date>
    </item>
    <item>
      <title>l.zappa posted Marc Davis (Yahoo!)</title>
      <link>http://web20live.tamtamy.com/tamtamy/content/details-2797.action</link>
      <description>[CIMG0010.jpg ]</description>
      <pubDate>Fri, 03 Apr 2009 01:47:15 GMT</pubDate>
      <guid>http://web20live.tamtamy.com/tamtamy/content/details-2797.action</guid>
      <dc:creator>l.zappa</dc:creator>
      <dc:date>2009-04-03T01:47:15Z</dc:date>
    </item>
    <item>
      <title>l.zappa posted Marc Davis (Yahoo!)</title>
      <link>http://web20live.tamtamy.com/tamtamy/content/details-2796.action</link>
      <description>[CIMG0008.jpg ]</description>
      <pubDate>Fri, 03 Apr 2009 01:45:57 GMT</pubDate>
      <guid>http://web20live.tamtamy.com/tamtamy/content/details-2796.action</guid>
      <dc:creator>l.zappa</dc:creator>
      <dc:date>2009-04-03T01:45:57Z</dc:date>
    </item>
    <item>
      <title>l.zappa posted TamTamy's booth</title>
      <link>http://web20live.tamtamy.com/tamtamy/content/details-2795.action</link>
      <description>[CIMG0001.jpg ]</description>
      <pubDate>Fri, 03 Apr 2009 01:45:33 GMT</pubDate>
      <guid>http://web20live.tamtamy.com/tamtamy/content/details-2795.action</guid>
      <dc:creator>l.zappa</dc:creator>
      <dc:date>2009-04-03T01:45:33Z</dc:date>
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      <title>e.spreafico posted Day 3 - Enterprise Web 2.0 Anti-Patterns, ROI, and Metrics</title>
      <link>http://web20live.tamtamy.com/blog/italian/?p=56</link>
      <description>[] Oggi sono riuscita a seguire una sessione dal titolo molto interessante perchè rivolta ad analizzare il ritorno dell'investimento e le metriche che si possono utilizzare per misurare l'andamento dei servizi web2.0 e nello specifico i social network all'interno di un'azienda.&#xD;
Purtroppo la maggior parte della presentazione si è basata ancora sul significato del web2.0, di quanto le persone ancora conoscano poco cosa voglia dire e capiscano poco cosa si possa fare all'interno di un'azienda. C'è una superficialità diffusa che porta a frasi come : "if wikipedia works, my wiki will too", pensando solo all'aspetto tecnologico del web 2.0 e non ti tutti i cambiamenti che può introdurre e che non bisogna sottovalutare per far partire un'iniziativa di successo.&#xD;
Solo durante gli ultimi minuti si è parlato del vantaggio competitivo dei dati e delle potenzialità che sono nascoste in una buona gestione dei dati. Si è accennato alla social network analysis, all'importanza del monitoraggio di un social network per studiarne le dinamiche e l'evoluzione delle relazioni, per poi terminare dicendo che non esiste una sola metrica per misurare il successo di un social network, ma solo utilizzandone molte si possono analizzare diversi dati per poi trarre delle conclusioni.&#xD;
Tutto questo mi era già chiaro e speravo di sentire qualcosa di nuovo, ma forse vuol dire che anche in Italia non siamo così indietro, no? ;-)&#xD;
&#xD;
Le slide sono disponibili &lt;a href="http://assets.en.oreilly.com/1/event/22/Enterprise%20Web%202_0%20Anti-Patterns,%20ROI,%20and%20Metrics%20Presentation.pdf"&gt;qui&lt;/a&gt;.</description>
      <pubDate>Fri, 03 Apr 2009 01:40:23 GMT</pubDate>
      <guid>http://web20live.tamtamy.com/blog/italian/?p=56</guid>
      <dc:creator>e.spreafico</dc:creator>
      <dc:date>2009-04-03T01:40:23Z</dc:date>
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      <title>l.zappa posted Day 3 - Even Faster Web Sites</title>
      <link>http://web20live.tamtamy.com/blog/italian/?p=47</link>
      <description>[] Lo speach di Steve Souders (Google) ha riguardato come migliorare le performance di un sistema web partendo dall'interfaccia, infatti è spesso il browser ad essere "responsabile" dei lunghi tempi di rendering di una pagina web. Per fare un esempio andando su iGoogle con la cache vuota, solo il 9% è utilizzato dal back-end per elaborare la richiesta, il 91% è invece utilizzato da browser per scaricare le risorse statiche ed eseguire il javascript presente.&#xD;
&#xD;
&#xD;
&#xD;
Steve Souders è l'autore del libro "High Performance Web Sites" e di YSlow, l'estensione di Firebug per analizzare le performance di un sito web.&#xD;
A giugno uscirà un suo nuovo libro dal titolo "Even Fater Websites", e la presentazione odierna ha trattato alcuni dei punti che saranno presenti all'interno del libro, in particolare i punti "Flushing the document early", "Simplyfing CSS selecotrs" e di evitare @import nei CSS.&#xD;
Questi ultimi due punti sono interessanti, perché hanno delle ripercussioni su chi usualmente definisce i CSS di un'interfaccia e che nella maggior parte dei case si focalizza sulla rappresentazione grafica, ignorando totalmente gli aspetti legate alle performance.&#xD;
&#xD;
Dimenticavo le slide della presentazione sono disponibili sul sito internet di Steve Souders:&#xD;
http://stevesouders.com/docs/web20expo-20090402.ppt</description>
      <pubDate>Thu, 02 Apr 2009 20:27:45 GMT</pubDate>
      <guid>http://web20live.tamtamy.com/blog/italian/?p=47</guid>
      <dc:creator>l.zappa</dc:creator>
      <dc:date>2009-04-02T20:27:45Z</dc:date>
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    <item>
      <title>Sparkling posted Expo - the force cloud</title>
      <link>http://web20live.tamtamy.com/blog/english/?p=39</link>
      <description>[] "Cloud computing platforms are transforming the way apps are built and run.&#xD;
&lt;strong&gt;Your apps. Our Cloud&lt;/strong&gt;"&#xD;
Force.com is a mature platform as a service. Its a &lt;strong&gt;multitenant architecture&lt;/strong&gt; that provide a boundary between the platform and the applications that run on it, making it possible to create applications whose logic is independent of the data they control.&#xD;
It provides a full range of development as a service tools: from a point-and-click customization tool, toolkits for the most popular development environments, and the Force.com programming language, &lt;strong&gt;Apex&lt;/strong&gt;.&#xD;
Apex &lt;strong&gt;is a propietary language very similar&lt;/strong&gt;, in its syntax, &lt;strong&gt;to Java&lt;/strong&gt;. Because Apex runs natively on the server, it can interact with the user interface via buttons and events, so that developers can manipulate data, channel transactions, and implement flow controls on the server side. That allows them to do everything from creating custom components, customizing and modifying existing Salesforce code, creating triggers and stored procedures, all the way to building and executing complex business applications.&#xD;
This is probably a weak point compared to other PAAS models that supports well known languages, but it is also due to the fact that ensure unlimited scalability, reliability and painless upgrades for the apps built upon it.&#xD;
What differentiate Force.com to other players is that as a PAAS is really oriented to enterprise application building rather that any kind of web application building. So you'll have, within the offering, the ERP connectors for SAP R3 and Oracle EBS 11i and obviously Salesforce, and a lot of middleware and desktop connectors too.&#xD;
The pricing model of Force.com is a subscription fee per user per month. Obviously open for any discussion for apps involving a large number of users.</description>
      <pubDate>Thu, 02 Apr 2009 15:44:32 GMT</pubDate>
      <guid>http://web20live.tamtamy.com/blog/english/?p=39</guid>
      <dc:creator>Sparkling</dc:creator>
      <dc:date>2009-04-02T15:44:32Z</dc:date>
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      <title>l.zappa posted Alex Payne (Twitter)</title>
      <link>http://web20live.tamtamy.com/tamtamy/content/details-2775.action</link>
      <description>[alex_payne_final_low.flv ]</description>
      <pubDate>Thu, 02 Apr 2009 15:05:04 GMT</pubDate>
      <guid>http://web20live.tamtamy.com/tamtamy/content/details-2775.action</guid>
      <dc:creator>l.zappa</dc:creator>
      <dc:date>2009-04-02T15:05:04Z</dc:date>
    </item>
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      <title>l.zappa posted David Recordon (Six Apart)</title>
      <link>http://web20live.tamtamy.com/tamtamy/content/details-2774.action</link>
      <description>[david_recordon_final_low.flv ]</description>
      <pubDate>Thu, 02 Apr 2009 15:03:47 GMT</pubDate>
      <guid>http://web20live.tamtamy.com/tamtamy/content/details-2774.action</guid>
      <dc:creator>l.zappa</dc:creator>
      <dc:date>2009-04-02T15:03:47Z</dc:date>
    </item>
    <item>
      <title>l.zappa posted Chris Messina (OpenId)</title>
      <link>http://web20live.tamtamy.com/tamtamy/content/details-2761.action</link>
      <description>[chris_messina_final_low.flv ]</description>
      <pubDate>Thu, 02 Apr 2009 01:11:27 GMT</pubDate>
      <guid>http://web20live.tamtamy.com/tamtamy/content/details-2761.action</guid>
      <dc:creator>l.zappa</dc:creator>
      <dc:date>2009-04-02T01:11:27Z</dc:date>
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      <title>luca.miccoli posted Day 2 - Keynote - Stephen Elop President of the Microsoft Business Division</title>
      <link>http://web20live.tamtamy.com/blog/english/?p=33</link>
      <description>[] A web lightweight version of Microsoft Office shall be finally released "next calendar year" announced  Stephen Elop, President of the Microsoft Business Division (the first announcement dates back to October 2008) during his keynote speech at Web 2.0 Expo in San Francisco.  It will offer a subset of feature of the packaged version of Office and it will run on an undisclose set of web browsers. It will allow functionalities thought for content production and sharing over the Net, with a feature set comparable to Google Apps. &#xD;
The full fledge packaged Office applications will have all the features designed for a Corporate environment, integrated with SharePoint Server, Unified Communication etc. Microsoft will not change its license based scheme for Office Application Suite.</description>
      <pubDate>Wed, 01 Apr 2009 23:24:32 GMT</pubDate>
      <guid>http://web20live.tamtamy.com/blog/english/?p=33</guid>
      <dc:creator>luca.miccoli</dc:creator>
      <dc:date>2009-04-01T23:24:32Z</dc:date>
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      <title>luca.miccoli posted Day 2: O'Reilly Keynote Speech</title>
      <link>http://web20live.tamtamy.com/blog/english/?p=26</link>
      <description>[] &lt;a href="http://www.web2expo.com/webexsf2009/public/schedule/detail/8829"&gt;O’Really&lt;/a&gt; is outlinining some of the key IT innovations that will change how people deal with application and on line services&#xD;
Keywords are: &#xD;
The power of less. Or Digital Commonwealth. Sharing users’ efforts in producing content and in developing software. Common wealth.&#xD;
Evolutionary Key concepts are: less and less content will be typed in by people on a keyboards an more will be gathered by network of sensors and computed and used on different devices.  There are many fields of applications of this kind of IT&#xD;
&#xD;
How to apply Moore’s law to world’s problems. Current Power Grids are the same as in the 19th century. Imagine a network connecting sensors energy grid, recognizing appliances from their electric footprint (pattern in spikes in pattern consumption) to help optimizing power consumption on a local and global level.&#xD;
 &#xD;
USSPENDING.GOV (government expenses monitoring) costed only 200.000 USD: it was cloned from FedSpending.org (non profit organizations). The US Gov just licensed their code.  Lots of saving can be generated from content and application sharing, we are just at the beginning of this change. &#xD;
Patientslikeme.com is another excellent example of user generated content in critical context.&#xD;
&#xD;
Still, there are lots of “Information Shadows”&#xD;
&#xD;
There is no global namespace in most of the knowledge fields or social fields.&#xD;
&#xD;
There have been few examples of that: CDDB database. Reading the checksum of each song it maps content of a cd on a global namespace.&#xD;
Web will be more and more based on a network of sensors (power usage, traffic, local readings, etc) using common namespaces to give them meaning.&#xD;
&#xD;
&#xD;
My final impressions from the keynote session are:  - we are in a transition situation, using legacy systems created decades ago and introducing (not widespread adoption) new distributed models of computing and value creation through IT. The IT is changing evolutionary patt</description>
      <pubDate>Wed, 01 Apr 2009 23:11:49 GMT</pubDate>
      <guid>http://web20live.tamtamy.com/blog/english/?p=26</guid>
      <dc:creator>luca.miccoli</dc:creator>
      <dc:date>2009-04-01T23:11:49Z</dc:date>
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    <item>
      <title>l.zappa posted Day 2 - The Principles of Distributed Computing and the Birth of AWS</title>
      <link>http://web20live.tamtamy.com/blog/italian/?p=30</link>
      <description>[] &lt;img class="alignright" src="http://assets.en.oreilly.com/1/eventprovider/1/_@user_11348.jpg" alt="" width="75" height="100" /&gt;Werner Vogels, vicepresidente e CTO di Amazon.com, ha tenuto una &lt;a href="http://www.web2expo.com/webexsf2009/public/schedule/detail/8539" target="_blank"&gt;interessantissima sessione&lt;/a&gt; su come l'infrastruttura di Amazon.com è cambiata negli anni, arrivando con step successivi ad una architettura a servizi, realmente scalabile e distribuita.&#xD;
Partiamo con qualcosa di curioso, Warner Vogels, che già conoscevo online essendo un lettore del &lt;a href="http://www.allthingsdistributed.com/" target="_blank"&gt;suo blog&lt;/a&gt; è veramente un personaggio particolare, molto fa l'accento pesantemente olandese del suo inglese, l'abbigliamento molto informal e la presentazione svolta al contrario è partito dalle slide che in realtà dovevano chiudere il suo intervento.&#xD;
Ma veniamo ai contenuti, sono stati presentati i principi che devono essere alla base della progettazione di un sistema scalabile e che Amazon ha applicato in questi ultimi anni per passare da una classica architettura (Application Server + Database) che non era per nulla scalabile, alla situazione attuale, all'architettura modello del nuovo Amazon.com, tanto ben fatta che alcuni servizi sono stati proposti sul mercato per essere usati da terzi, si tratta degli &lt;a href="http://aws.amazon.com" target="_blank"&gt;Amazon Web Service&lt;/a&gt; (AWS), che sono usati anche da &lt;a href="http://www.tamtamy.com" target="_blank"&gt;TamTamy.com&lt;/a&gt;&#xD;
&#xD;
I principi illustrati sono:&#xD;
&lt;ul&gt;&#xD;
	&lt;li&gt;autonomy&lt;/li&gt;&#xD;
	&lt;li&gt;asynchrony&lt;/li&gt;&#xD;
	&lt;li&gt;controlled concurrency&lt;/li&gt;&#xD;
	&lt;li&gt;controlled parallelism&lt;/li&gt;&#xD;
	&lt;li&gt;decentralize&lt;/li&gt;&#xD;
	&lt;li&gt;failure tolerance&lt;/li&gt;&#xD;
	&lt;li&gt;local responsibility&lt;/li&gt;&#xD;
	&lt;li&gt;simpliciy (but no simpler)&lt;/li&gt;&#xD;
	&lt;li&gt;symmetry&lt;/li&gt;&#xD;
&lt;/ul&gt;&#xD;
Attualmente i servizi che sono stati realizzati e che sono necessari per il corretto funzionamento di Amazon.com sono circa 600, eterogenei, scritti in linguaggi differenti, non ci s</description>
      <pubDate>Wed, 01 Apr 2009 23:11:47 GMT</pubDate>
      <guid>http://web20live.tamtamy.com/blog/italian/?p=30</guid>
      <dc:creator>l.zappa</dc:creator>
      <dc:date>2009-04-01T23:11:47Z</dc:date>
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