We need new medical approaches to preventing and/or curing disease. We need new scientific approaches to generating, storing, and being more efficient with energy. Maybe we need more space exploration. Maybe we need more undersea exploration.

Don't try to solve the entire problem on day one.

Foursquare's adoption of a game dynamic when it launched is a particularly clever implementation of a social hook.

Early in a startup, product decisions should be hunch driven. Later on, product decisions should be data driven.

All markets have boom and bust cycles, and I think venture capital market has even more exaggerated boom and bust cycles.

I'm a free speech bigot. I don't like censorship; I just don't think it's a good thing.

Blog-based businesses have lower cost structures and are more 'authentic,' and as a result are drawing larger shares of ad budgets.