Originally Posted by Toff 
What I did was put a required question in the sign up process. If they do not answer it correctly they can't sign up.
All bicyclists in the USA know who Lance Armstrong is so my question is:
What is Lances last name?
Its been 2 years now and not a single spammer has signed up.
The question doesn't have to be hard at all.
If it was a French bsed biking forum, then the question that's not really hard at all would probably be :
"What kind of doping has Mr. Armstrong been accused of ?"
Now
that would be a question *everyone* here in Europe would be able to answer …

*evil grin*