There is a list – called stopforumspam – that tries to collect spammers’ signatures or characteristics. There is anti-spam software that uses this list to deny spam messages during the posting process. But the drawback is, it creates a hassle for the legitimate users. Most forum spam comes from 2 programs, one named s c r a p e b o a r d, and the other names x r u m m e r. A better strategy than going after companies that spam is to go after the makers of these programs. x-rum is russian, so it’s impossible to go after it. But s-board is australian and can be sued in a class action if anyone decided to go to the trouble. The reason it’s useless to go after the companies that benefit from spam is that they’re usually unaware they’re employing spammers. They just hire a so-called SEO expert to increase their exposure in the search engines, but they don’t realize that the techniques used by these experts are underhanded (at best). Google and other search engines are always pulling the rug out from under spammers, but the spammers find other ways to trick the search engines. It’s a never ending cycle of adaptation to each others’ tactics.