No, everyone has great ideas, but what makes a difference, especially online, or just in life, is actually doing it; getting that first version out there.

The weird thing about reddit is that, for a community its size - now I'm no longer at reddit, but the public traffic numbers that they put out are, I think with the site about eight million unique visitors a month, or every 30 days, which is a fairly big site.

Hundreds of these companies I've seen since the beginning stages - including Dropbox and Airbnb - one of them has actually been crushed by an incumbent. The Googles, the Twitters, the Facebooks, they might be someone to acquire you, which is not necessarily a bad position to be in.

If I'm at the University of Georgia and I can't inspire this room full of students, OK, fine. I'm not going to take it personally. Maybe a little bit, but I'll be all right.

You know that Estonia, based largely on how successful Skype was, built by Estonian developers, that was a tenth of the entire country's GDP when eBay bought it. That was like a decade ago, it was f****** Estonia, they were behind the Iron Curtain two decades earlier. They're now pushing for K-12 education in computer science in public schools. They've gotten the message. They know how much value that can bring.

You can throw - and we've seen plenty of these kinds of companies - millions of dollars in advertising for a website or a service, and in the end if it's not useful no one's going to use it.

The surveillance state has run amok. Technology that's enabled us to send selfies 24/7 - not that valuable - has also enabled us to be spied upon us 24/7.