I found a lot of great people in Toronto through OnStartups LinkedIn group and I think it would be great to have one for Hacker News and Y Combinator. Should we let PG do the honors?
LinkedIn Groups are really broken. There are at least two HN groups on LinkedIn already and you can't link to them. I think the suggested way to join is to be invited by the admin or two click through via the profile of someone in the group already.