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There's no denying that the fight against spam attracts a lot of crazies, both pro- and anti-spam. One of the common attributes of the anti-spam kooks is that they often think in terms of somehow taking revenge against the spammers—regardless of who else gets hurt along the way.

In 2005, that revenge came in the form of BlueFrog, a service which purported to launch what can only be called denial of service attacks against spammers' web sites. Though far from the first, this time the revenge idea proved surprisingly popular—and unsurprisingly ineffective. As usual, there was absolutely no evidence that the serious spammers even noticed. If they did, they were probably laughing.

This week, a company called SpamZa was hurriedly making a similar mistake. They took the old script kiddie trick of mailbombing a victim by signing them up for hundreds or thousands of unconfirmed opt-in lists, and turned it into a service. Anne Mitchell describes it further.

What's interesting is that this only works for what the email marketing industry calls "single-opt-in" lists: Those which allow anyone to enter any address, and then that address is automatically added without any additional confirmation or verification step. SpamZa has, ironically, proven what anti-spam activists have been saying for years: Single opt-in is not opt-in at all.

However, that does not redeem SpamZa. No matter what their disclaimers may disclaim, that service is only useful for abuse—so it should be no surprise that they've been shut down.

Read more from ZDNet, Word to the Wise, and Getting Email Delivered.

This article was originally written for Box of Meat

Written by J.D. Falk, Director of Product Strategy at Return Path. Visit the blog maintained by J.D. Falk here.

Related topics: Cyberattack, Cybercrime, Spam