2. Save His profile Picture 3.Search That Picture with Google Image Search
(In Google Image Search their is small image of camera exactly right
side of search button click on that image and upload image )
wait for Google search it show all content on internet which have that
image either facebook,orkut,linkedin and many more social networking
5. And From result u can Conclude that the account is fake or real.
Thank you for Reading Hope it will help you
You can also use this technique to find fake account on other networking site like Orkut , Myspace,HiFive,Google++;