Top 5 from Web 2.0 Expo

The first Web 2.0 Expo is behind us, and it was a good show. In addition to dozens of interesting panels (including, if I do say so, mine), there were about 115 companies presenting on a crowded expo show floor, and six interesting company presentations during the "Launchpad" sessions that ran on Monday and Tuesday.

With Webware.com's Josh Lowensohn and News.com's Erica Ogg, we picked our Top 5 Web 2.0 services from the conference. They are:

• Tellme, which has a new downloadable app for getting useful 411-like info on your mobile phone. (news)

• Octopz, a very slick collaboration service we covered a few days ago. (hands-on)

• Dapper, which can make any Web site into an RSS feed or widget. (field report)

• Coghead, a Web-based database that just came out of beta. (hands-on)

• Spock, the upcoming people search engine. (preview)

Play the video for the full rundown.