codeforamerica/brigade — pull request #237 by awesomizer (2013-08-14 12:59:43+00:00)
Title: Honey pot captch

A honey pot captcha that uses a hidden field in the sign-up form. The record is valid if the field is blank, and 99.9% of bots should fill it in. Hopefully this will stop the bot sign-ups. This could also be implemented as a delete on the after_save hook. Then the bot would think they had succeeded, but probably no need to give them the db time.