is there any way/website to find similar profile pictures in facebook?

Hello All,
i want to know is there any way to find similar profile pictures in face book, because many girls/guys are using another picture and declaring their own picture, how to find the cheater in face book? is there any way, any site?

From web app $pageUsers[$entry.posts[0].author].name

• www.tineye.com - but it will only work if the profiles are public

  From $pageUsers[$post.author].name

• I tried Face.com a while ago, it might work.

  From benoror