Yelp is testing different landing page layouts to determine which generates more user engagement. They are A/B testing two pages to see which layout leads to higher rates of category clicks, time on site, and overall usage. The results of the test will help Yelp decide which page design to implement more widely. Advertisers choose to advertise on Yelp for its large user base and ability to target local markets. Cambria Hotels, AT&T, and Kia Motors advertise on Yelp to reach the site's demographic of potential customers and to build their brand.