Book mark this

Tim O’Reilly and John Battelle's presentation, Web Squared: Web 2.0 Five Years On at the Web 2.0 Summit in 2009.
Consider bookmarking these people's blogs, even set up an RSS feed:
Tim O’Reilly's Radar blog
John Battelle's Searchblog

David Stuart's Web 3.0 promises change for libraries, Research Information, (February/March 2010)

Sarah Bartlett's blog four part series on Understanding the Semantic Web
Fiona Bradley's Semantic Library blog
Marcus Cake's Web 1.0, Web 2.0, Web 3.0 and Web 4.0 explained