trafficgigolos has a few female masturbation sites, with some twists to keep things interesting.. ;)
bubblegum dreams- girls who masturbate while chewing bubblegum, sucking on suckers, etc..
my girlfriend squirts - girls who masturbate themselves to female ejaculation
my panties are wet - girls who have a panty fetish and masturbate with panties
pro squirters - another site in which girls masturbate themselves to female ejaculation
rip my pantyhose - this site has other scenarios mixed in, but tons of female masturbation involving pantyhose.. worth a look
smoking alone - female masturbation while smoking cigarettes and cigars
check out my sig for details and click on it to view screen shots, tours, etc for all of the sites listed above (and more)..
as always, if you have any questions or concerns please let me know and i'd be happy to help you out in any way that i can.
thanks for looking!