I can't seem to find a way to find out the chronological order specific users 'liked' a page. The main purpose would be to award lets say the 5000th user that joined "my" page. However, as much data as possible is also beneficial - be it acquired via standard means (via facebook site), or the facebook API (which I currently know nothing about).
P.S. I hope I'm asking this on the right page, if it should be moved to one of the stack exchange sites, let me know or just do so.