From the website:

BizRate is operated by Shopzilla, a leading comparison shopping service founded in 1996. The company's mission is to enable shoppers to quickly and easily find compare and buy anything, sold by virtually anyone, anywhere. Each month, Shopzilla connects millions of consumers with thousands of stores. In June 2006, Shopzilla attracted over 18.9 million unique visitors according to ComScore. Shopzilla also operates the BizRate consumer feedback network that collects millions of consumer reviews of stores and products each year.