Registration is now open for the Spring 2012 iteration of 30 Days of Biking. Go register, and then ride.
The official 30 days starts April 1.
I’m not sure what I’ll be doing in conjunction with the 30 Days? At the very least, a tweet a day, but it might stretch as far as a photo a day or all of my rides GPS’d or even a blog post a day. There will be something though.