Just found an article on Angieslist about an outfit called Medical Justice that helped a doctor contractually obligate patients from talking about them online with a gag order. It certainly sucks to have someone talk smack about your business online, but suing a patient seems like an absolutely boneheaded way to deal with it.
Hey doc, here are some alternative ideas:
The Online Reputation Management Guide (OutSpoken Media)
Managing and Improving Your Business’ Reputation Online (GetListed.org)
Free Online Reputation Management Beginners Guide (Marketing Pilgrim)
And if you are a patient of the above doctor and want to see how to far you can push that gag order down his throat check out this post by Ann Smarty on how to spread a negative reputation online.