Yes, this is still early beta software.
Have you looked at your direct messages? We have sent you a direct messages with a link. To make sure you are not a twitter bot, please visit the link. It is like double-opt-in in email newsletters.
We track your tweets, that you send to @21T and with the hashtag of your habit like #jogging. Everyday we find your tweet you get a point and after 21 days of practice and tweets you get to the score board of 21tweets (soon to be opened)
Hmm, about 5 minutes or so and you should receive a direct message from 21t with more instructions.
More to come.