I've noticed StackOverflow allows non-registered users to ask questions by simply requiring the person to enter in their Name and Email.
How does StackOverflow prevent (or reduce) spam from bots?
Right now, I'm using bbPress as a web forum. It requires my users to create an account to participate in the forum.
I would really like the ability to allow non-register users to participate in my forum ... because I strongly believe I'll have more participation (requiring a user to create an account is a pain in the ass for them ... so they just move on).
So know moring about how StackOverflow allows non-registered user activity while also reducing spam would be excellent to know.
Thanks P.S. I also want to state that I realize there probably is no "silver bullet". But if an effect method exists that dettors or reduces spams, while not eliminating, but does a good job reduces/prevents - I'm all ears.
I found Jeff answer here. Jeff mentions
"script detection heuristics and "honeypots""
I would be interested in learning more about what he means and what is implemented.