Is this a thing that I'm supposed to understand and use? Does it have a purpose? Do any of you even know what Klout is? Am I officially an Old for having to ask these questions?

I was talking with friend who works in social media the other day and he asked me what my Klout score was. After hearing my eloquent response of "...huh?" he made me sign up for Klout (at which point we discovered that I have a higher score than him and this is apparently Not Cool At All).

So... I guess it's supposed to measure how good you are at the internet? Do we care at all about this? Hivemind, what say you?