I am working on a project to develop a Web 2.0 application for improving public transport efficiency. The idea is to combine a WIKI, social network and database in a structured system. It's described in a bit more detail on my website page on public transport efficiency (towards the bottom), but that's not what I wanted to talk about.
I wanted to talk about the Groundswell Awards. Groundswell is a book about how companies can better use social networking. I will review the book later, but they also have a blog and recently sponsored a contest of the best uses of social networking. Here's a link to the Groundswell Awards 2008 blog posting. There's lots of neat ideas on this page!