The Avvo Rating is based on data they collect about you, including years practicing, professional achievements, and disciplinary sanctions (if any). This data comes from several sources, including state bar associations, court records, and lawyer Web sites, as well as information that lawyers provide to Avvo. They calculate your score based on a 1-10 scale rating. It might not be a bad idea to claim your profile. The more experience you get, the higher rating you receive. Claiming your profile is free. I find myself using it as a resource pretty often.