I'll be signing up with some new sponsors to cover a few niches, and I'm getting them from this URL below. Great page bro!!
http://www.hoes.com/sponsors
Niches I may still need a great converting sponsor for, reality site or otherwise:
bbw
bisexual
cartoon
cheerleader
femdom
fetish (generic/non-specific)
gay
group/orgy
hairy
indian
lesbian
midget
panties
pornstar
pregnant
spanking
stories
upskirt