(The Humanitarian Social Network)
If you're still in undergrad or are someone looking at graduate schools the Idealist Grad School Fair is a fantastic place to go.
I went to the one in Houston last year and it was incredible. You meet a lot of great people and also get to see graduate schools you're interested in.
Be sure to RSVP if you plan on going. I'll also be there if anyone wants to meet up before or after.
Hope to see you there!