I see what you're saying, and it's absolutely true. As you write it all lies in the "if used right" - the problem is that for most people (me included) facebook

I see what you're saying, and it's absolutely true. As you write it all lies in the "if used right" - the problem is that for most people (me included) facebook, linkedin, etc. tend to be timesinks because you just have to check your friends tagwalls, pictures of their pets, etc. So it's normally not used right, if the definition of right is not spending any time on the site, and just using it as a reference.