AT&T patents anti-antispam technology

Citing an "arms race" in the ongoing spam wars, the company defends its patenting of a technology to thwart antispam filters. via [CNET News.com - Front Door]

Okay, I can see the point of increasing the legal liability of spammers, but that this patent was granted is infuriating. It patents "Change the content of your spam." Here I sit pondering to what extent the spammers are using Web bugs in decoy spam to verify my email address and to what extent I can even speak about anti-spam techniques without risking a DDOS attackĀ and the patent office says "Change the content of a spam message with, oh say, a sequence of random letters? Wow!"