I know spam is an eternal problem, but is there any way you guys could auto-nuke new posts that include "IELTS", "GMAT" or "ESOL" in the title? I was happy to flag them when there were 4 or 5, but I have a few dozen in my "new posts". In the meantime, you could probably erase any post by user "alexanderowen".
PS. Congrats on becoming large enough to be worth targetting by spammers!