Doctors: Web ratings flawed

Web-savvy consumers use online rating services to review restaurants, rant about hairdressers, praise carpenters and even assess their college professors. So why shouldn't patients rate their doctors?

While more than 30 different online services now grade doctors, assessing a doctor's skills has turned out to be much more complicated and controversial than ranking hotels or restaurants. Critics say that most sites have too few reviews per doctor to offer statistically significant information, and the medical establishment has vocally questioned the concept.