Just compare it to other well known sites..
Persian Kitty PR5 - shes been around forever, fuck that site was big 2-3 years before dialers were used.
Tommys Bookmarks - PR4 - I remember submitting free sites to him when I first go into adult in the late 90s
Richards-Realm - Pr3 - another one from the late 90s
GFY.com - Pr4 - its been around before around was around.
So unless that site has 79 backlinks from some of the biggest sites in the world, its fake. You would expect a site Pr8 to have a Alexa ranking better than 2.8 million
