Barely a day goes by where someone is not asking me about what Microsoft is doing in preparation for Web 2.0. Here's a link to a great introductory whitepaper at ChangeThis.
Troy Angrignon's introduction to the principles and concepts of Web 2.0
Web 2.0 will significantly shape the Business Intelligence and Performance Management landscape and here's some interesting early examples.
If you're like me and live for charts check out this blogpost from Patrick Husting introducing swivel.com
Steve Clayton also directed me to this little beauty - a London tube map styled view of the trends for 2007. It has ten "lines" across society & culture, government & politics, work & business, media & communications, science & technology, food & drink, medicine & well-being, financial services, retail & leisure, and transport & automotive.