Why doesnt question and answer at registration stop spam registrations.

[JacquiiDesigns]

Limiting Spammers:

For 3.7.x - 3.8.x series vBulletin - use the following and it should knock out all automated spambots. The only spammers you'd see are those who register manually. Great thing is - the bulk of spammers are spambots - so this combination of modifications (in this order of installation) should nip the problem directly in the bud:

1. NoSpam!
   A must-have that vBulletin based it's question/answer functionality off of - only NoSpam! works much better
   
   
2. ragtek Botscout Register Check
   This mod is graveyarded on vB.org due to drama - but still works fine. There are no security concerns to worry about. It checks new users IP address against the botscout.com anti-spam database
   
   
3. Cyb - Advanced Permissions Based on Post Count
   This is not necessarily anti-spam -- but with the correct permissions set - new users (with post count of 10 or below or whatever you amount you set via AdminCP) will not be able to post links in threads/posts/pms/etc... So this mod will block users who register manually from spamming their links. It will, however, not block said users from posting links on their profile ARG - profile spam is a sneaky bit of madness...

HTH

J.