These two are the ones that tend to payout the most for me. I don't make enough for rent there, but maybe could if I only worked on clip sites:
Clip4Sale- I sell videos there only
ExtraLunchMoney- videos, photos, panties, text...you can pretty much sell anything there really.
Good sites for a little extra on the side I'd say most of these I make 1/2 of what I make on the above or less. If nothing else they can make for decent promotion.
iWantClips good clip site for femdom clips. I feel I'll be able to count it up there with ELM and C4S in a couple of months.
ManyVids I pretty much only sell vanilla porn there, but always seem to make at least payout.
Amateurporn They've pretty much just started out. Not a terrible site, but I normally just make minimum payout end of the month.
ModelCentro I do a weekly update. I assume it could be more income if I worked on it more, but I generally don't have the time.
NiteFlirt started off real slow, but it's finally picking up for me.
MyPornProfile I use this mainly for the pay per tweet feature. Occasionally I sell a video there, but traffic seems low.