I was just suggesting some tools to spot them before they spam.
For instance the profile for "zarim" indicates that it registered on 12/10/09.
http://forum.oldversion.com/members/zarim.html
It didn't start posting spam until 8:34 AM on 12/11/09
http://forum.oldversion.com/general-...-200-sale.html
http://forum.oldversion.com/programs...-200-sale.html
http://forum.oldversion.com/requests...-400-sale.html
If an administrator or moderator had checked the account during the interim, he/she would have found that this is a Nigerian spambot that's been active since 5/9/09.
See: http://www.stopforumspam.com/search?q=zarim
Checking the username often isn't enough. The e-mail and IP addresses should also be searched.