The Internet is a computing platform built on top of core technology. Applied technology is what gets built on top of that: It's Web services.

Certainly anything that is news or opinion needs to be free on the Web, because the Web is this very fluid medium that is very much driven by links and the flow of visitors through a discussion via links.

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

New York's niche is content, and content is becoming more valuable. Just think about what is more valuable: MTV or the cable system that you use to get MTV? Howard Stern or the radio station you use to listen to him? Ultimately, technology becomes a commodity, and content - real, true branded content - becomes more valuable.

Startups are rapidly changing systems. If you use an annual review cycle, you aren't getting feedback at the same pace that you need to adapt and change the business.

Facebook is not an unstoppable juggernaut. There are a lot of other things people can do on the web.

Many artists stick to making and hire a manager to focus on their business. Artists that build websites and mobile apps can do that, too.