How Much Should Patients Rely on On-line Doctor Ratings in Choosing a Plastic Surgoen--esp for Facelifts?

On sites like realself, healthgrades, vitals, ucompare, etc, most plastic surgeons have at least a couple people who aren't happy with results. Some have all satisfied patients but only 2 or 3 ratings. One wonders could some of the ratings be fake? Unfortunately I don't know anyone in my area whose had a facelift to get a personal recommendation, so I'm relying on Internet research and consults.