That was after about 15 minutes
I let version 11 run all night long without much increase. It leveled out at around 33MB. So it must have been the event tracker I wrote to figure out the phantom clicking.
I'm probably going to go away from the pay/click thing and find some interesting partner programs. Amazon is great and I like their content. The pay/click stuff annoyed the crap out of me, plus they are very paranoid about it. No doubt they have been scammed by click harveters and automated bots, so it's hard for people like me to use their products in a reasonable way.