Every month is International "Write Something" Month. It doesn't have to be a novel; join us in banging out 200-250 words a day (or how ever many you decide works best for you) without any regard for quality or saleability. Anyone can write bad short fiction* for fun.
*bad, short, and fiction are all optional -- we're all in this to encourage each other to "sit down and write."
Check out our LJ: http://community.livejournal.com/iwrislomo/