I couldn't see a clear example of how it obscures them, but either it preserves the information (e.g. tacks ".no_spam_please" on the end of the email address which the clever spam bot will just strip off again recognizing it isn't a valid top-level-domain) or it removes the email address completely (which can be frustrating when people have a genuine reason to get in touch with a poster).The software being used to generate these archive pages apparently provides options to obscure email addresses: http://www.mhonarc.org/MHonArc/doc/faq/security.html#spam
And almost certainly too late. Do you get spam offering to sell you 5 trillion email addresses on a CD? You're probably already on there.Can we enable this? I am trying to get my email address off of public websites due to frustration with ever-increasing spam. (Yeah, it's a losing battle, I know...)