The site has two other interesting search features.

The first is a comparison based rating system. While Yelp might show you the same rating for multiple Chinese restaurants in a city, Zoodango ranks all Chinese restaurants against each other, based on user feedback. There is never a tie.

Perhaps the most interesting feature Zoodango's search offers is real-time personalized venue scores. Based on how much you like restaurants and businesses that you have rated, Zoodango's algorithms will predict other venues that you might like.

Currently, the service is only available in Seattle, Portland and San Francisco but Sun said the company will be adding new metro areas every month. Coming next are Los Angeles, San Diego, Phoenix, Tucson, Las Vegas and Reno.

Soon to come will also be a revenue stream other than basic online advertising.