How to prove fake Facebook likes?

[aykutc]

Hi,

We have a photo competition going on Facebook. The photo that gets the most likes will win a small prize. However, we think somebody is getting fake likes using sites such as likelo.com or similar.

One photo is clearly the better one and it's been shared by more than 30 people and has 50+ positive comments from real people. The other photo is not good at all, has not been shared by anyone and has no comments but it has significantly more likes.

Is there a way to prove that it's been getting fake likes? What can we do about it?

Thank you.

[falsi fiable]

You can't.

Host the competition somewhere else that requires a verified username registration.

[Matthew]

Oh God! This happened to me!!!
Me and A celebrity took a picture and got 10000 likes.

And the hacker got : 370000 from the first hour :/

[Raphael]

Search for similaritys, if its a bot then it can never be perfect, start by making a small list of up to 15 different people and look at their likes, if alot of them are similair it is probably a bot, then there is also the friends, a network of bots is usually connected to each other...except if you would have 2 networks which could then connect to each other