I just cleared out my spam bin, and got to wondering. Why do spammers advertise, specifically, Cialis and Viagra?
Why not human growth hormone, steroids, heroin, or for that matter Aspirin? Does it make a difference if the drugs are prescription? (Are Cialis and Viagra prescription?) Is there some kind of evolutionary thing going on where they compare-try different ads, and the Cialis and Viagra ones are the most profitable, and hence survive?