10 tips on fighting forum spam

SitePoint Forums - 10 tips on fighting forum spam

1. Use human validation
2. Email verification
3. Prevent new users posting links
4. Limit post edit time
5. Limit signature links
6. Use conditionals
7. Block common sources
8. Censor common offenders
9. Have a moderator team
10. Remain vigilant

Bad if phpbb, SMF and vbulletin are less targeted.