Thumb came from fling.com banner advertisement. By the pic it has a random name of a supposed fling.com member, but it changes every time - the names are "for illustrative purposes". In other words, they just use random pics of pornstars in their banners to promote their site. I can confirm...
http://graphics.pop6.com/ffadult/featured/external/photos/O5/4CO5VZAwDtSWIRVVsB0Vzg.jpg
Afraid this was the best image I could get because i don't know the identity, plz help