The porn thing, sure. There was a study out last year, you could google it. My opinion on the other stuff, no. Sadly, there's no online reference compendium for my opinions yet.
Is this a new thing, asking for data for opinions? I've seen this asked a few times recently.
Sometimes the noobs get pissed though and start flaming so you have to nick alert the admin on mIRC for that person to be bannato'ed from the server.