Everyone is panicked about the transition to mobile. I don't lose any sleep whatsoever.

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.

Everyone is panicked about the transition to mobile. I don't lose any sleep whatsoever.

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

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

One of the challenges of buying local advertising is, how do you know if it worked? How do you know if it's got value? We're moving toward an e-commerce experience for local, an Amazon-like experience for local.

Choose something you are passionate about - or a pain point that has affected you and that you feel really needs to be changed.