When a producer does have something that might sell well to a micro-niche sort of audience, is there any resource available that has a listing of various websites that cater to a particular niche? For example, we have a redhead that might entice red-head lovers to join. I had a difficult time finding a red-head lover's blog.

We also shot a solo of a guy who was wearing his flip-flips and only flip-flops throughout. I know to go to my friend Joey at flipfloperotic.blogspot.com - but i wish there were a compendium somewhere for other things?

Thanks.