Mike Hayes received a cookie on Feb 01 for being very clever. And unlike in some places, when someone says something clever on BuzzFeed and we say, "Have a cookie," we actually mean it! Except we don't, because this is a virtual cookie and what the hell are you going to do with a virtual cookie?
Mike Hayes received a "Collection" badge on Sep 15 because they posted something that people are adding to. That's harder than it sounds - usually people are just like, "meh," (which, and I get that we're now waaaaaaay off topic, is a really annoying thing to say under almost any circumstances).