Best of the blogs: IT Troubleshooter’s Michael Baum continues his dicussion of open source stacks with a breakdown of the related sessions taking place next week at LinuxWorld Boston. (Full disclosure: LinuxWorld is owned by IDG, the parent company of InfoWorld.) Search: AOL and Google nail down the details of their deal, which involves Google taking a $5 billion stake in AOL and the joint exploration of the market for graphical online ads. VoIP: A Taiwanese telecom provider points the finger at Voice over IP as a reason why its revenues dipped, highlighting the fact that operators worldwide are threatened by low cost calling services. The news beat: Microsoft makes the technologies it acquired from FrontBridge available as add-ons to its hosted version of Exchange Server. The UK is poised to move ahead with national ID cards. And a U.S. house panel approves a bill that would create new regulations for so-called data brokers and require U.S. companies to notify victims of data breaches. Technology Industry