Web-based app builder/suite.

According to the site:

Userplane™ is the world’s premier social software provider for online communities. Our award-winning technology makes it easy for website owners and publishers to add free content, functionality and advertising in an instant. Grow your community – and your revenue – with Userplane.

Random, but just a very cool website. You can ask 500 random people any question. An example of an interesting application for 2.0 technologies.