You can find some great proggies in my sig that may help
The goth stuff is pretty rare, so brings in some decent alternative traffic...and making Bank converts like mad...
But what you're making is not bad...also, something I tend to do to make a efw extra $..if you are already making galleries anyways, toss up a couple AVS front ends and you have instant sites and if those sites can convert TGP traffic, then they'll do well with AVS traffic...you can also make free sites out of them, just mirror the galleries, add an extra baner or two, an index page and more instant sites...
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