Users think they know what they want, but you get the horseless carriage effect where you're getting asked for a faster horse.

The instant they say something you don't expect or already know, you should drop into detective mode.

Most startups are not just built for the person who is using them. When you do that, every now and then you get really lucky and... are representative of some huge class of people who all want the same thing you do... but very often that just turns into a side project that doesn't go anywhere.

The most interesting things you learn in an interviews come from the: 'interesting', 'tell me more'

Given the huge number Xbox owners and how many of them love gaming spectatorship, its a natural fit to bring the Twitch experience to the 360.

The other mistake I think people make is talking to who's available rather than talking to who they need to talk to.

Recording interviews is like magic. a) It stops you from taking notes in the middle and b) you can play that recording for people.