Hey All,
We just released our app Circle which tells you when people from your networks or your friends are nearby. We were trying to think of different online communities of people that we thought it would be interesting to meet in real life and Hacker News was one of the first that came to mind. (I've personally met numerous awesome people through Hacker News... one of which I just saw reading HN on his laptop at a cafe and randomly struck up a conversation about string theory :).
Anyway, we created a network specifically for HN Readers and would love for people to join it and hopefully start connecting offline!
http://discovercircle.com/hacker-news
