False or spam business listings may be identified by searching reviews associated therewith. The associated business reviews may be searched for one or more keywords that suggest the business listing is spam. Moreover, business listings may be categorized based on a type of business in the listing, and the associated reviews for business listings in each category may be searched for characteristics particular to that category. Further business reviews may be searched for hits matching portions of business reviews associated with known spam business listings. Once a business listing is identified as potential spam using these techniques, the listing may be flagged for further review.