I joined the NaBloPoMo site, which isn't the crazy voodoo it sounds like. It's just a trick to get us all posting every day for a month, because if you do something for 30 days, it becomes a habit. So it's a good thing it's not in February.
If you're slightly insane, or just insanely ambitious, you could try Nanowrimo, which is National Novel Writing Month. If you are thinking of writing a novel, there's a fantastic book, Bird by Bird by Anne Lamott (honestly, you should read anything of hers that you can get your hands on) that unfortunately did not propel me to write the great Canadian novel, but that's not to say it wasn't worth reading. My lack of literary follow through may be more my fault than hers.