http://www.delorie.com/health/asdlc/

Robochallenge is a program that reads this newsgroup and watches for
the start/current/goal lines in everyone's signature, and keeps a
running commentary on your progress each month.  You can indicate your
monthly goal preferences and such, see the web page for details.

The purpose of the robochallenge is to provide a gentle incentive for
people to "stick to it" month after month after month after ...