Personally, I don't know.
I have never participated before and although I'll most likely fail I really want to at least give it a shot - to see where it goes. But I'm pretty sure most of the writers here have participated at least once in the NaNoWriMo. How did it go? Did any of you guys win? Did you completely lose your mind while in process?
This is more a question out of curiosity than anything. =P
So, is anyone here gonna be participating?