Spam sucks and administrating a forum that is phpbb3 based you find there are a lot of bots that sign up and try to post spam. It’s a pain to go through by hand and remove them all due to some of them being really clever and looking like real people. This is where a great site like stopforumspam.com comes in to play. You are able to search users based on email, username and IP to check to see if they have been reported as a spammer before.