If people are passionate about your product, whether it's because they're hating or loving it, those are both good scenarios.

Even though running is physically straining, it's mentally refreshing. Especially when you feel like you've accomplished something.

Doing startups is all about making mistakes.

I think that's a really important role that people sometimes forget about, especially with all these newspaper shutting down and having trouble, where are all these stories going to go? I think you have something really great with all those stories waiting to be told, but I just don't know how it shapes up exactly. I don't think there are going to be a lot of newspaper reporters sitting around not writing.

Creativity is an infinitely renewable resource - you are not going to run out of it - so don't be afraid to use it.

Even the simplest tools can empower people to do great things.

When you think of a social network, you have these two-way interactions: "Are you my friend? Yes? No? Yes?" Like LinkedIn, it's business oriented, but it's all about establishing connections. You connect to me through my other connections, and that sort of thing, and you sort of define who your friends are. Twitter doesn't have that.