- Edited
Make a posting rule of 2~3 thread at most per hour. Also forbid new people to post more than 3 new threads after they join. (Those spammers account age is lower than 1 hour).
Actually it is better if you check 'last post' compared it with the "last post". Those spammer had long word counts. Perhaps made such rule. Certain long word counts would be compared with their last posts.
Actually nobody normal (non spammer) would post > 2~3 threads in an hour. Especially with many similar 'characters/alphabet' or 'words'.
A common user would have their Thread =/= Their Number of Post (Only Spammer do this make a topic and run. They don't contribute to the discussion). Perhaps for the first thread it is fine, but second, third, fourth, etc. That is a spammer.
