I wouldn't of shut the site down unless you got a demand letter on dead tree stock, which would add more authenticity to their claims. But IANAL -- many threats of legal action were send via e-mail to NANAE folks by spammers, but very letters were ever sent via snail-mail or courier. (And of those, the cases got thrown out since the judge found the spammer guilty of lying under oath)

That and a spoofed address means the letters were as authentic as degrees sent by spammers, and as valuable as points on "Who's Line is it Anyway?"

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$Stalag99{"URL"}="http://stalag99.keenspace.com";