I've been to this one before, and it's well worth your while if you're within commuting distance of New York City. It's a day of panel discussions, beginning at 9am with a panel on "The State of the Market" and ending with a Q&A with Stephen King. Cost is $90 for MWA members, $125 for non-members. I'm not on a panel at this one - not quite in the same league with Janet Evanovich, Harlan Coben & company. But I plan to wear a T-shirt with my "Mood Swing" book cover displayed on it (see my Crimespace page) and who knows what will happen! Web link for more info is
www.theedgars.com/symposium.html.