My first expression was... "really?", "Is it possible??", "Can people be this honest?" but now that I give a second thought to it, I think this is possible because of a few reasons
- Netizens are growing more mature ? stalking ones's gf/bf and watching porn is not the *only* activities
- Net has turned out to be an integral part of our lives (see this article)
- People may find it easy to share the things when they are not surrounded by others
- People feel more free to appreciate the shared things when none's watching '
But for sure when used such sites legitimately ? it will provide me wealth of information about persona of an individual.