United States of America (#1 - 104 medals, 46 gold)
We really needed all that gold. Thanks for helping our debt, Mr. Phelps!
We're all sad to see the Olympics fade into the mists of Bob Costas-narrated memory, but more than individual people, it is the nations themselves that are sad to see the Games end. For once, we were not the hyper-individualized stars of the Internet we have all convinced ourselves we are - we were part of a much larger Facebook group: our country. Here we've "favorited" (get it?) some of the best tweets from those nation-states that made the 2012 Olympics so special.