Feydakin - 4:42 am on Dec 4, 2010 (gmt 0)
We have gotten a lot more aggressive with deleting these types of accounts.. Profile page links are noindex and nofollow, plus we purge the userbase on a regular basis.. O post members get no mercy and are deleted often.. Even single post members get deleted if they never return.
Yes, this does cut way down on the number of members we show has having, but I'd rather show 6k real people than 50k profile spammers..