Sponsors With The Most 'Uniforms' Sites...
Naughty America (6)
3 hottest uniform sites... (according to Alexa)
www.ihaveawife.com (+73%)
www.myfirstsexteacher.com (-21%)
www.naughtyoffice.com (-30%)
Get Cyber Cash (5) (already mentioned)
Sunny Dollars (4) (already mentioned)
Movie Partnership (4)
3 hottest uniform sites...
www.girlknights.com (-165%)
www.maidsass.com (N/A)
www.analmaids.com (N/A)
Serious Coin (4) (already mentioned)
Sextronix (3) (already mentioned)
Get Right Cash (2) (already mentioned)
X Bang Cash (2)
2 hottest uniform sites...
www.horneydoctor.com (+9%)
www.mybigdickschool.com (N/A)
Cash Maniacs (2) (already mentioned)
And then I see about 40 other sponsors that have (1) uniform site each. If you'd like to check them out, see my sig, and search for uniforms in the 'search by niche' box.
Hope that helps!
Mike