http://www.health.harvard.edu/blog/erectile-dysfunction-drugs-skin-cancer-worry-20140605719

Thanks for those studies. I read them and that's what I meant when I said there was a correlation but not cause and effect. At our ages our history of skin protection or lack of it  is  much more likely to be a factor.

Let's look at the facts:
Men whom are targeted by these drugs are 50+ years old.
50+ men were teenagers in the 1960's to 1980's.  
We all hung out by the ocean, at the lake, and got suntans using Hawaiian Tropic Oil among other things.
In our 40's+, how many played golf, had boats, did outside activities without sunscreen.

In our 50's+, were targets for the ED drugs for a number of reasons, and getting older and not as hard as 20's not withstanding as a valid reason for those prescriptions.  

40+ years of sunburns, suntans, etc. and it's no surprise there are skin cancer issues are popping up now.

It's easier to blame ED drugs, than to blame Fiber One cereal.  Besides, Big Pharma has more money and exposure than Post or General Mills.   Because they are newer than cereal, there MIGHT be a chance of some side effect.   Juries are filled with idiots, not chemists, geneticists, biologists, or scientists.  Idiots can be charmed by passionate statements by plaintiff lawyers, not facts.  

This is a bunch of ambulance chasers, looking for a buck.  The true victims get pennies, but the lawyers get hundreds of millions.  Bunch of bullshit, IMHO.