Q:

What is the actual HTTP request performed by a Facebook "Like"? 

I know that the plugin URL isn't actually performing the Like request.  There's got to be a POST or PUT request around somewhere (in the Open Graph API?)  that updates the Like counter of the thing you're trying to like. 
This is not for an auto-like bot or anything of that nature.  Just curious if anybody knows how to make the request that actually changes stuff through HTTP alone. 

A:

Download Fiddler and see what is actually being sent: http://www.fiddler2.com/fiddler2/

