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.

Let's do 150 stops. Let's go to 75 universities, and let's spread this gospel of Internet entrepreneurship everywhere we go.

Facebook makes me hate the people I know, and Reddit makes me love the people I don't.

If you have things or are involved with things that turn on, it's going to have code. And there are so many people - let's pick on the historians - even as a historian, let's say I ended up going the road of being a historian, just knowing some basic scripts, any kind of automation would have made me a 10 times better historian because I wouldn't have to sit there changing every file name to "1234" and then "12345." It can have a transformative value.

Do not be scared of the incumbents.

We don't even realize something is broken until someone else shows us a better way

We were very, very lucky being in the first round of Y Combinator because that alone generated a lot of interest. A lot of readers of Paul Graham were just excited to see what was going to come up. And we were the first ones to launch.