In my personal experience, I first heard of it 1 year ago in a online forum game, people sold gold for Bitcoins, around March, gave it no importance at first. Now im kinda utterly commited to it. Really an interest subject of study.
I've just heard about bitcoin this year and I was so amazed with it. I mean the value of it which is so high and the convinience it gives to the people when it comes to money. I first saw it in social media and I thought it was a fraud that's why it took long before I started to actually do it. Because of that discovery, I became comitted with this becase it brings large amount of money.