Spamhaus and snowshoe spammers

A very interesting post has been made on wordtothewise on Spamhaus' new black list.

This blacklist is supposed to identify spammers using their own (instead of compromised) IPs to send out spam.
Of course we are talking about a huge number of IPs there.

The post explains fully the concept of snowshoe spammer and the new blacklist's principle.

Very interesting blog post, a "must read" as I reckon.