I use the anti spam plugin which helps with posts, but I have noticed recently a large number of spammers registering and using the user info / profile page to create an "Advert" for their services. They are not posting, just creating profiles which link to their website etc.
I don't believe this feature exists, but it would be useful if you could specify a user to not be able to set up a user profile info page until they have X posts or similar. This should stop them being able to do this.
I may open a ticket for the spam plugin to also send the profile info to akismet as I suspect it doesn't do that currently.
Any ideas are welcome. Going to go and delete the 20+ new spam accounts now that have appeared in the last 2 days.