It's not easy for an entrepreneur to find the time to blog. But for those who do it, it is a great tool to communicate with the various stakeholders in their business and build a reputation for thought leadership.

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.

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.

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.

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

Skyping with your spouse works well enough, but apparently it is hard to get the kids to hang out on Skype for long.

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