How It Works
Make a pledge for how many times you want to tweet per week. Break your pledge once, shame on you. Break your pledge again, and you'll need to put your money where your mouth is.
Tell Beeminder what you would like it to count, and start Tweeting!
More details on the Beeminder Blog.
Beeminder will automatically track your progress and make sure you stay on the right side of Bright Red Line you've set for yourself.