To me AdBlocker makes a GREAT difference, because it will simply remove most of those fake download buttons and other crap that will possibly lead to malware. Really, installing it in a client's browser brings that "clicking" issue to a minimum, not to mention it reduces traffic and makes the overall internet…

Not all torrents equal sharing copyright protected content. Been using torrents for years, never had any problems. I'd say much more trouble will come from people search for "photoshop download free" on google and downloading something from these links.