Don’t Click That Link!
According to a story in The Register, some spam out there contains opt-out links which will try to install malicious software that could open backdoors, install keystroke loggers, or worse.
In the words of Alex Shipp of Messagelabs:
So not only do you confirm your email address to the spammers, you also get to host their next spam run, and get your bank account cleaned out.
MickC @ September 22, 2004