• Google issues YouTube ultimatum to Microsoft as Hatfield-McCoy feud heats up

  Google yesterday sent a cease-and-desist letter to Microsoft, demanding that its rival remove the YouTube app built for the Windows Phone platform.

• German case on embedding YouTube videos referred to EU court

  Embedded YouTube videos don't infringe copyright under current German law, but they could violate European rules, the German Federal Court of Justice said on Thursday.

• Copyright owners denied class status in YouTube suit

  A federal court in New York has denied class certification to copyright owners in an infringement lawsuit against YouTube over unauthorized hosting of content, stating that copyright claims have only superficial similarities.

• Google tells Microsoft to shut down its YouTube app for Windows Phone

  Google on Wednesday demanded that Microsoft yank its YouTube app for Windows Phone from the market and disable any downloaded copies of the app, according to Wired.com, which received a copy of Google's cease and desist letter.

• No Chrome-Android merger, at least in the next year or two

  Android's new boss hinted of an eventual merger of Chrome and Android but said the two will remain separate "for the short term," in an interview posted prior to Google I/O's opening keynote on Wednesday.

• Viral video: A DIY guide

  Now that YouTube officially supports 15-minute videos, Andy Warhol's dictum that we'd all be famous for 15 minutes has proven more than a little prescient. Viral video is nothing to scoff at. There's more than just page-view bragging rights at stake--there's real money to be made. (Get popular enough, and YouTube will cut you in on ad revenue.)

• Stop frustrating pauses in YouTube videos

  In response to some recent posts about YouTube, reader Miles wrote me to ask about YouTube "buffeting" (I think he means buffering, unless YouTube has started generating strong winds in his area).

• Force YouTube to play HD videos every time

  Yesterday we talked about customizing your YouTube homepage settings -- and protecting your privacy while you're at it.

• Analytics boost social marketing efforts

  Big-name companies including General Electric and Best Western are maturing their social marketing programs and integrating social metrics with back-end systems.

• Google rides out service blockages in China

  Google's services have been riding a bit of a rollercoaster in China over the last several days. A one-hour or even 12-hour blockage wouldn't hurt the company. It's the potential for a much longer blockage that could be problematic for Google, says one analyst.

• Gartner: The top 10 strategic technology trends for 2012

  ORLANDO -- The technology that makes up many of the systems in the ITworld today is at a critical juncture and in the next five years everything from mobile devices and applications to servers and social networking will impact IT in ways companies need to prepare for now, Gartner Vice President David Cearley says.

• Motorola Xoom: Tablet impresses, but drawbacks remain

  All eyes are on the Motorola Xoom tablet, and for good reason: It's the first device in an expected multitude to ship with Google's tablet-optimized Android 3.0 (Honeycomb). The Xoom has a lot of features to like, and a lot to set it apart from the ever-growing crowd of tablets; but it also has some drawbacks that temper my enthusiasm about it.

• YouTube 2010 'top videos' list ruled by music

  If YouTube started as a place for people to upload low-res videos, Google's global 2010 'most popular' video list shows just how fast the model is evolving into something nakedly commercial.

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  Check out the latest HP Application Lifecycle Management Videos.

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  Risk and Reward: Business Opportunities and the IT Security Challenge