I participated in Nanowrimo in November, but I failed to actually finish the required 50,000 words during the month. Oh well. I plan on finishing the book eventually, anyway.
Furthermore, as an open source exhibitionist I thought I'd publish a chapter each month. This will put a bit of pressure on me to keep writing, and hopefully I'll get some nice feedback too.
The working title is "Hacker Noir". I've put the first chapter up on http://noir.liw.fi/.