Did non-techies hear about Facebook in the first 2 years of its existence? Techies know about it first because they are up to date to such things. Once people on radio and TV start talking about it, they'll know about it, too. That's how the mainstream works, otherwise it wouldn't be called mainstream anymore.
> Did non-techies hear about Facebook in the first 2 years of its existence?
Every single human attending Harvard in 2005 heard of thefacebook, and almost all of them were active users. This pattern continued as it expanded to other colleges, and eventually high schools. Facebook had a steady, population-representative mix of non-technical users from birth; it was never techies'-little-secret in the way that Twitter, Foursquare, and Quora were.
Warning: I work at Facebook now, but did not back then. This is just my second-hand understanding.
