Point taken. How would you suggest we go about this? I look at other sites like Facebook and Twitter, and it's not entirely clear upfront what they do either. Are you suggesting something like an "About" or "Learn More" page?
This is what they used to look like when they first went semi-public at harvard: http://blog.gleuch.com/post/50407323/the-original-facebook-h...
Note that the about link at the bottom went to more info as well.