This is one of the most important things to keep up with. All companies of any size have some bad reviews but you must respond and be ready to concede defeat to get something positive out of a bad review. YELP, Google, and Yahoo have review sites.Sometimes attorney’s may have reviews an AVVO and places like that. Physician’s will have them under the various physician review sites. Angie’s List is a good on the keep up with too.