There is so much buzz around this company and I just don't get it. You can keep everyone up to date on what you do. Don't people already do this with AIM, Myspa

There is so much buzz around this company and I just don't get it. You can keep everyone up to date on what you do. Don't people already do this with AIM, Myspace, friendster, blogs, etc.? I just don't see a need to know if someone is listening to a Bono track right now. I'd like to get some feedback on some people who love the site.