It stands for "National Novel Writing Month", which is a slight misnomer, because its actually very international. I've been thinking of entering for a little while, and this year finally have. The aim is to write a 50k novel in one month (November). It's incredably hard work, but amazingly rewarding, if my previous speed-writing experience is anything to go by.
If your november isn't looking too busy, why not sign up? Theres no one to recriminate you if you don't quite make it... and it's less than 2000 words per day
And even if you don't want to take part, the forum attached is chock-a-block with experts in various subjects, so you can use them for other writing projects, even if you're not writing anything for it



