I think that goes back to the usual privacy issue. As you may remember, one of my main concerns about blogging, “twittering”, “facebooking” is privacy. I understand that there are tools and mechanisms in place to protect users. Still, I am not sure the data I post on the net are 100% safe and mine.
Facebook for me is a great social network, but also a great danger. I am always amazed when I see pictures of friends, colleagues on facebook, in situation I would not feel comfortable….And everybody has access to these pictures! So at the end of the day, I do understand the protest from the facebook users!