Amazing how many people think that because the Sexkey rules are restrictive it applies to all (or even most) of the AVS's worth using. There's a lot of them out there that realise quality sites, optimised for SE's and in quantity will generate pass sales and benefit everyone in the long term.
If you wanna do 500 sites though the best methods already been mentioned - look to the preium/feeder system.
Mind you if you just build them you will make $4k+.
This site says so at the bottom of the page so it must be true!