Want to cash in on the Web 2.0 craze but don't know how? Make a Web App has the perfect idea for you! Success 100% guaranteed!*
Refresh for another, and don't forget to check out other people's favourites in The List:
It gives the rich and famous a method for blogging about celebrity gossip via a wiki. We'll call it LoudTacky.
"I think this already exists. It's name is Perez Hilton, and it is the most annoying thing on Earth."

Tada.

It brings geeks and kids together through an online office suite for video. We'll call it SwimScreen.
Idea created by Josh Sharp, who also makes real web applications for those with sensible ideas.
* success not guaranteed.