Web 2.0 Summit now courting clean-tech start-ups The Web 2.0 Summit--a conference of the Silicon Valley digiterati--seems to have changed its theme from "monetize the Web" to "save the world."Tim O'Reilly, one of the Web 2.0 Summit organizers, on Monday posted a blog with details on the fifth edition of the conference coming up in November and its Launchpad event for start-ups. Google open-sources XML-alternative Protocol Buffers Google said Monday that it has created an open-source project for a data interchange format called Protocol Buffers. Microsoft preps pay-as-you-go Web apps for business Microsoft detailed on Tuesday its road map and pricing for Web-based software suites built for big companies and growing businesses. Adobe unveils Reader 9 with Flash Adobe released on Tuesday the first Reader application to bake movies and animation into the Portable Document Format. Internet Explorer 8 beta 2 Microsoft's release should retain its browser base but doesn't yet have enough to lure loyal Firefox users back to Internet Explorer. Yahoo OneSearch finds a home on your Nokia Starting Thursday, searching the Web with a Nokia series 60 phone will be a little faster. Apple Sells One Million iPhone 3Gs in First Weekend Apple® today announced it sold its one millionth iPhone(TM) 3G on Sunday, just three days after its launch on Friday, July 11. iPhone 3G is now available in 21 countries Facebook hits 100 million users Facebook has hit 100 million active users. No formal press release has been issued, so you're going to have to believe the guy who built the site.