It looks like none of the suggestions have been implemented yet - ads by google are still there, site pal is still there, browse by criteria is not there - these are all important features and have already been mentioned. I suppose you didn't get a chance to work on it yet, since these are all only few days old suggestions.
I would like to suggest that you display more thumbs per page. When I go to view the set, it takes me to a page with only 16 preview thumbs. I would really suggest that you put more of them per page. Even 50 is still safe and will not cause major load times (if anything, it's that site pal that will give people with slower connection troubles).
When you implement search by categories, you might want to give each set respective tags depending on which category it fits in. For example if I click on a particular set, it could have these category tags:
Blond Teen
Petite Teen
Small Breasts
and each of them would be clickable (just like with any tags) and it would display all sets that are tagged by that search criteria.
You have nice content, tweak the site a little and the sales will go up, I'm positive
