Hello

... I think the math question is the ultimate, its easy for a human and IMPOSSIBLE for a bot to figure out. A bot has no idea that 1+7= 8

Also, computers make trillions of calculations per second... why calculate 1+7 should be difficult for some bot? According to http://recaptcha.net/security.html "others, such as MAPTCHA, consist of asking text-based arithmetic questions like "what is 1+1". These can be trivially broken by an attacker." If they are not broken right now (probably they are!) they can bypass it pretty easily in the future.

A human attacker can break a math captcha but he can break an image captcha too. But if there is no semantic interconnection (HTML-wise) between the question and the form field for the answer, I would doubt, that a machine/bot can break a math captcha, especially if the mathematical formula is "hidden" in a sentence ("What is 1+1?" vs. "1+1").

Tschö, Auge