Porn at your own Risk!
"... infect unprotected Windows users who stray onto maliciously constructed websites
Porn at your own Risk!"
Not just porn. Warez sites tend to be buggy, some newsgroups(age showing), and chat programs can be vectors for the malware.
Opera, Mozilla, Flock (beta), Firefox, and others may not be a bad idea till proprietary Internet Explorer hole (PIEHOLE) gets closed.
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