More on the question of university lecturers and Facebook (which I blogged about here), from the Houston Chronicle just before Christmas:
Should teachers become virtual “friends” with their students? Opinions are mixed. Opponents fear innocent educators will be branded sexual predators for chatting with students online, while proponents caution against overreacting to a powerful communication tool.
It starts off a bit sensationalist, but gets better, with some interesting contributions. Get the article here. I also recently rediscovered, from the New York Times (March 2008), The Professor As Open Book, which deals with some of the themes mentioned in my original post.