Restaurant sites are what usability pros show onscreen when they want to get a belly laugh from the audience.
The reason is that restaurants are focused on looks before usability. This leads them to use pictures of text, PDFs, and the hated Flash.
Those technologies range from poor to complete fail when it comes to searchability, mobile adaptability, accessibility, and ability to select and copy/paste text.
So instead the site designer creates a solution supposedly more far more "usable", and rides off into the sunset with a new slide for her presentation. But since no one actually working at the restaurant day-to-day is computer savy or has any time for keyboarding stuff while cooking or waiting on tables, the menu gets way out of date (until some waiter's kid who knows how to use the computer comes by), and the highly usable accessible searchable search result returns a bogus menu from last month.
With a camera feed, the cooks hurriedly wipes 3-eyed fish off the board with his sleeve after throwing the last one on the grill, and no blind person walks over to order one. She calls first.