While not paying your restaurant staff can lead to lots of whispers and anonymous angry tweets, not paying your web designer can be a sticky situation for a restaurant owner.
Recently, the webmaster of The Italian Village in Milmont Park (which was on an episode of Restaurant:Impossible) decided to replace the cheesy web presence of the restaurant with detailed lists of shitty Yelp, Yahoo, and Google reviews. The very best one of the batch suggested throwing the live accordion player in the dumpster because he "belittled people" who didn't request "Irish Eyes" and "Happy Birthday." Instead of negotiating with the spurned HTML jockey, The Italian Village went ahead and bought a new domain.
In another case, Jim Davis, one-time employee of Raju Bhattarai of Ekta Indian Cuisine, posted official health violations on the site when a paycheck didn't arrive in a timely fashion. Davis also added his own suggestions, including "Be Sure to Tell Ekta's Owner/Chef to Wash His Hands Before Making Your Food." The site has recently been updated with the proper info, but no word on whether Davis was compensated, or if Bhattarai seized control of the passwords to make things right.