Funny site to send your friends to.

send them to http://didyouwatchporn.com ( they have their own cloaking system)

What it does it checks their browser history for any porn sites, and then emails you a list of what they found(and what kinda gross stuff their into) Then you can bust your friends for watching porn and tell them when and at what site they did.

Go to the site and you'll understand better. (check the FAQ)

Not very useful, but kills some time and is good for some laughs .

do it to your own comp find out if anyone is hitting up other sites on yours

Yup... I watched pron.... lol