Bigt00F received a First badge on Feb 20 because they were the first person to post a thing even though maybe someone else posted that thing after them and got featured for no other reason than, like, sometimes a bunch of people post a thing and the first person to post the thing doesn't get the credit that they deserve. But now they are getting the credit! This is the credit!
Bigt00F received a "Collection" badge on Feb 19 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).
Bigt00F received a "Fact Checker" badge on Feb 15 because they verified or disputed a fact and backed up their claim with some kind of written or visual proof. If we didn't have someone to check the facts, none of the facts would get checked - and then where would we be?!