Backend database maintenance

[Garbz]

Hey just a though. I was bored today and seeing some spammers as usual creating an account and then posting a message probably never to be heard of again I thought I'd check something.

There are 11546 users with less than 2 posts registered on this forum. Doesn't that slow down the system or use a large amount of space? Some of them are clearly spam accounts, others have no posts at all.

Do these ever get culled out of the database?