My most popular galleries:
Girls
Harley and Hell's angels
Mustang Sally
Cats
Graffiti
Goths and punks
photoshopping autumn
greens
fish
photoshop sketches
retouchpro galleries
dripping paint
fireworks
photo-journy
street speak
The one thing in common here is no ragular animal shots, zoo shots, scenics, landscapes, flowers, sunsets or any other of the common things everyone shoots. All pretty unique except the cats and girls. Those shots I pretty large galleries of.
The length of time a gallery has been posted is not a factor. I have galleries posted for 6 months that don't do any biz. Others been here one month and the numbers are through the roof.
Yesterday I got almost 3000 views on the girls thumbnail page alone. I got hardly any on some suckier galleries that have been here forever.
Hope this helps and good luck.
Cheers
BTW..it is a lot.