Get my newsletter, usually once a week - it features long-form essays on what's going on here in Silicon Valley.

I've written 550+ essays which have been featured and quoted in The New York Times, Fortune, Wired, and WSJ. The topics range from mobile product design to fundraising to "growth hacking."

Here's one message you want. Chen's weekly newsletter offers thoughtful essays on startups and marketing from a true Silicon Valley insider.

- Wired Magazine

Andrew is one of the smartest geeks in Silicon Valley, and a brilliant and comprehensive virtuoso on a broad array of tech and non-tech topics including internet advertising, viral marketing, web analytics, social networks, online games, and all kinds of web glitter. He is a veritable Glenn Gould of startup blogging, and every chance i get i rip off his ideas and try to pass them off as my own. Respect.

- Dave McClure, 500 Startups, Paypal

I go to Andrew to learn more about the latest methods for building and retaining web audiences. There's no one who knows more about it.

- Mitchell Kapor, Kapor Capital, Lotus Development

PS. Looking for recent essays? Look here.

PPS. Or, check out some of my best essays below or see the full list of featured essays.