You have to be very nimble and very open minded. Your success is going to be very dependent on how your adapt.

If somebody writes a review of a dry cleaner, that piece of content is not wildly viral. It's not like a viral video that can spread across the world in a matter of minutes, so as a result, each market is almost an island unto itself.

When Yelp first took off, our rankings on Google would fluctuate wildly.

Yelp is in a very nice spot: local data, and especially review data, is one of the killer apps on mobile phones.

The entrepreneurs that really make it are the ones that start with an idea but are ready to change it at a moment's notice.

Maintaining the trust of the consumer is critical to our business

I think with every successful consumer Internet business, there will be lawyers that are interested in going after your company, especially when they think that there's a financial incentive.