The Founders of Tinder and Twitter Knew That to Build Big Buzz, You Have to Start SmallHow do you build a community around your company? Andreessen Horowitz investor Andrew Chen has a counterintuitive answer: Don't take it to the masses...yet.

What do a dating app, Uber, a nightclub, and Airbnb all have in common? "If your customers come to this product, and there aren't enough other people around, then they're just going to bounce," says Andrew Chen, a general partner at the high-profile Silicon Valley VC firmAndreessen Horowitz, who sits on the boards of Clubhouse, Substack, and a dozen other buzzy tech startups. These companies require what's called anetwork effect: They become more valuable as more people use them. (After all, nobody hangs out at an empty club.) That means founders need to attract an active and connected base of users quickly, or they may fail to attract anyone at all.

This isn't easy, but it is possible — and one strategy to make it happen applies to any business aiming to foster acommunity. It's the subject of Chen's new book,The Cold Start Problem. Here, he explains how to attract the masses … by starting with the few.