I happened to see this in the New York Times a couple of days ago...

Peter Wu & Others

8 May 2013

Peter Wu: To me, it’s a bloody ‘Hard Sell’ – no if or but or may-be.

Facing Black Market, Pfizer Sells Viagra on Web

Stella Tse: This makes some sense, you don't need a doctor to tell you that you need the wonder of Viagra.  And if you want to learn about the drug's 100's of side effects and interactions, just watch the commercial.  I just wonder if the Chinese made counterfeit would be made of certain body parts of rats!

Bob Choi: Of course, it's a HARD sell...

As sex in all its variations is the hotest selling item online, selling Viagra (and other sex aids) makes perfect sense! There is a saying that "wherever you find poisonous snakes you will also find the anti-venom"...