About every year or two, there is a moment of truth where there's some new development in the marketplace, some new technology, some sort of existential crisis. You just have to be vigilant about looking out for those moments.

Where folks like Google have fallen down is in just putting a little review box up, then closing their eyes and letting the algorithm take care of itself. Yelp is a technology company, but also a company that understands how people want to connect with one another.

Once a new technology rolls over you, if you're not part of the steamroller, you're part of the road.

Many people mistakenly think a new technology cancels out an old one.

There is this cat and mouse game that plays out over time where our team comes up with new and interesting ideas to identify content that we shouldn't recommend, and over time people are constantly probing that, trying to figure out how can they get around that and get a better reputation on Yelp.

It is the framework which changes with each new technology and not just the picture within the frame.