The 30 Characters Challenge is an annual online challenge to create 30 characters in just 30 days, one for every day in the month of November and registration for 2012 is now open. The actual event starts November 1, but you can register at www.30Characters.com
Registering is easy. Sign up with your name and email address to be added to the roster. If you've already participated in the past, your account should still be active and will give you authorship privileges.
Full press release below.