If I remember correctly, I must have heard about it some two years ago, most probably on the BBC - either on Click! (a weekly tech show on BBC News), or have read about it on their page. I think it was around the time Zano got funded, and it was featured because it was based in Britain. Since I was, and still am, living in Germany, I wasn't very interested at first, because Kickstarter wasn't open to creators from Germany at that time. However, I have started work on my first project even before it opened up to Germany, so I must have got "infected" at some point...
Anyway, by the time my project was finished, Kickstarter was already available in Germany, which saved me a bit of hassle.