What is Fancheck on Facebook based off of?

[soccerchicka1194]

I'm just curious as to what Fancheck on Facebook is based off of.. Wall posts, picture comments, or actual stalker things like picture views?

[Meggy]

If you look at the top it says it isn't based off of views or private messages, so its just based off of wall posts and picture and status comments!

[Pandagotchi]

I thought it was views at first but i guess it's interactions such as picture comments, wall posts etc. But i still feel this is slightly wrong. Also don't download it, it's rumored to have a virus within it.