You know I think its just because people want to be anonymous and want to be on their own when they are on this site.

Me personally, I have a lot of friends on my list but I don't interact with them all the time. Mostly because I lose track of them, I have been away for a while, or they are just off doing their own thing.

I think this place is so "homey" and comfortable because we are free to interact or not interact whenever we want