Using facebook in class

The article http://www.onlinecollege.org/2009/10/20/100-ways-you-should-be-using-facebook-in-your-classroom/ has a really interesting list of "100 ways to use facebook in your classroom" There are many I wouldn't attempted but it's great to see that teachers are starting to embrace this technology and are coming up with some interesting lessons. With Web 3.0 around the corner it is important to get use to the social networking sites such as facebook and twitter.