The Winter SWL Fest is running right now. It's a great place to hear some interesting forums about SW & AM radio and also to meet up with other people interested in the hobby. I've probably met a couple dozen HFU people there (and probably a few dozen more then-active pirate listeners from the pre-HFU era). Aside from a few clubs & DXpeditions, such as MARE & BADX, it's the only real opportunity to meet up.
http://www.swlfest.com/