http://developers.facebook.com/plugins
get persons facebook id:
Ok, first, go into their profile page. Then look at the top of the
internet browser. The rectangle box should have a lengthy link in there.
Look through that until you see id= or something like that. Another way
is to right click on their profile and click “view source” and press
Cntrl+F while your in the notepad and search for id.
http://developers.facebook.com/setup/?error=sys
like button for user / not fan page…