The Japan, Russia, and Georgia(?) clues were pretty good. The users found them, posted them, the internet deciphered them. It was a real tag-team effort.
One clue, a twitter/tumblr user got herself, tweeted that she got it, and rather than take a picture of the cipher, she took it home to do herself, and got a couple obvious letters wrong.
One of the clues wasn't hidden well, and was taken by a nun or janitor or something long before the hunt started.
One of the clues was an address to a post office that's several hours away and a PO box key. A girl named May eagerly volunteers "I can take it tomorrow, I don't have a job!" She sleeps in and gets stuck in traffic. A crowd of people has been waiting outside the bank for hours and the bank has to stay open longer for her late ass. Inside is the...
Puzzle, pic related. Cue attention whores and thots chit-chatting and doing anything but trying to solve the puzzle. A black dude was our inside guy. A rumor started that 4chan was going to steal some pieces. May wanted to keep the puzzle since she was the one who brought the key, she had a big meltdown over it. The thing took about 5 days, which is longer than it would take to brute-force a puzzle with that many people working on it. This was about 1/3 the entire hunt in terms of time.
The last clue led to the coordinates of the statue. May tried driving there, but, train-wreck embodiment that she is, her car dies in the middle of the forest. The statue turned out to be on disputed property, and it was relocated to the local police station.