I do not use social networking like Twitter, Facebook, linked in, etc. however, of all of these systems, I prefer Twitter because it's the least invasive. If I

I do not use social networking like Twitter, Facebook, linked in, etc. however, of all of these systems, I prefer Twitter because it's the least invasive. If I want to hear what a particular person has to say, I opt in. I find that an appealing concept. It's almost the antithesis of Facebook.