You can use this to see if any of the facebook pages you like have gone and bought fake likes to appear more popular... http://www.sterntv-experimente.de/FacebookLikeCheck/
They read the information about the facebook page through an API called Opengraph. It sends back statistics about the page in question.
It's pretty fucking interesting, it's certainly confirmed all of my theories regarding 'big names' not being so big at all.
