Week 2: Social media

I have been on MySpace and Facebook for a while, the most useful function to me is the 'Wall' on facebook. e.g. my 'Wall' is at http://www.facebook.com/profile.php?ref=profile&id=649752992 (may need login, i guess). It is a very efficient way to communicate with friends who are often on facebook :D, and usually can have response in few minutes. But I have a bit compliant about the facebook's interface . For a new user, it is hard to find out where to do what you want and the pravcy issue has been widely talked around the world. :D