filster: FOAF SPAM Fighting

In the ensuing battle between end users and spammers, a clever series of experiments has netted a usable Anti-SPAM solution. filster is a new initiative developed by Justin Mason Richard Soderberg that attempts to string together a collection of well-known tools with some quick code.

The premise is surprisingly simple. The system culls information from your existing FOAF profiles (retrieved from the likes of Orkut, FOAFweb, Reputation Research Network, and CPAN. A simple cross-reference with these files for the incoming sender address and, if successful, a simple X-Header is added to the mail message.

For the technically minded, it's worth checking out. Thanks to JD for pointing this out.