Believe me, we do
These guys are free-time
vampires as far as I'm concerned.
The amount of new spam has actually dropped significantly in the last two weeks. Automated methods are also being discussed, but these guys are persistent. IP blocking is out: these criminals vary their IPs as a way of life. The most effective methods also usually introduce user inconvenience (Captcha, Post delays, manual approval..), Pre-empting spam with a language filter will only cause them to alter their text.... It IS annoying.
Your reporting helps. Thanks in advance for your continued patience