The amount of spam in here is getting ridiculous and it's painful to remove (I feel very sorry for your admins who have to wade through all the reports)
It's noticable that the same culprits keep doing it - you really need to be able to flag a user as "blocked as a spammer" and be able to automatically remove (or at least hide until moderation) all their posts.
Another common and useful practice is to limit new users to a very small number of posts per day until they've built up a reputation without being flagged as spammers (it only needs to be a low number - the last place I worked had it set as "5 non spam posts and you're fine"). You can apply the same to a user - 10 separate spam reports and you automatically remove all their posts.
So, a while ago you posted something about improved spam checking, which obviously hasn't worked - any updates on proper systems of prevention and removal?