Initially a toss up between the Istanbul drone shadow and Dronestagram but I think this just pips it, becuase of the sheer simplicity of execution, the lightness of touch that goes with all good ideas and the huge reaction it got on Twitter and in the press the day after. It even made the Shard wikipedia page.
And cos it's well funny.
Picture from joroach.
Picture from Lapatia.
So. Not this.
Got Turner Prize written all over that boy.