There's a pretty big difference between sharing photos and going to an event with someone. I'm willing to share all my concert photos but I have a shortlist of people I'd be willing to spend hours at a concert with.

@thomasgerbe

You're correct and I get your point. My first statement didn't get out as intended. I think that with those services in its current form it's not so much about where it is now, but where it can get. Ofcourse you don't go out with the 300 friends you have on facebook. But those services aren't focused on such big networks; they are focused on the 25 people you do and can go out with and it is about sharing valuable information and having fun with those. Facebook is great for the 275 other ,,friends''. The network is smaller, but it's really more social.