How's Joseph Kony these days? It is what - four years - since that video everyone shared and made Kony famous on Facebook.
I suppose he is still doing what he always did best, leading drug-warped child soldiers through African jungles and generally war-lording away. He still hasn't been captured.
For that matter, how's the hashtag campaign to return that group of kidnapped Nigerian schoolgirls from the grasp of Boko Haram? Funny how #bringbackourgirls isn't trending on Twitter any more.
It's hard not to be cynical about the power of hashtag activism. Social media makes it too easy to give a damn for five minutes and then move on to something else.
It has become trendy, even, to react immediately to whatever tragedy is dominating headlines. You do your social and you've done your bit. Or so the thinking sometimes goes.