notauniquename

So I have an ad up on my site. It's above the fold to the left and square and I've had about 355 click thru's and no sign ups in the last couple weeks. It's with pimp roll.

What is an acceptable click through rate I should accept before changing my ad? I'm guessing with porn it would be like 2000 to 1 or something?

Damn if I had this kind of click through on my non porn adsense site I'd be making big buck.