My friend Arne did a post on sex on his blog as a little experiment to see if it would bring in some traffic. Shockingly it up'd his traffic with 300% and this is for only 1 post!!!
If you want to read the results go to the following link.
It makes it obvious that the "hot"test topic on the net is definitely sex. I can't help but picture a guy secretly sitting in a dark room with a dial up connection, looking over his shoulder every 5 seconds. googling for the latest "hot" thing. Lol..