[spgoldman]

Originally Posted by gopherhockey

We have a question in our registration process that asks for a Biography... bots are always answering "Man" to this question. Humans either skip it or enter random stuff.

When I first installed this hack the bots were done instantly.. 4 days passed without a one. Now they are back again.

My guess is that they have figured out a way around this. That or they are flat out guessing the answer to my quesitons, which I doubt. Or, these are humans who are using automated software to help the registration process (like autofill) so they are able to actually see the question and answer.

At any rate, it went from about 6 a day to 0 in 4 days (post install) to about 6 just today again. Bummer.

Just use same technique spammers use. Form questions with combination of numbers, words, spaces and characters. Make sure they are human friendly, but at the same time squeezes the sweat out of the spammer, for example, twentyeight 'p lus' eight "minu s" 9 =...
make sure you have plenty of questions without dup answers. They need to be a numeric value, so users don't have to guess the format.