This Toyota Prius User's Guide was compiled by a group of Prius owners and includes practical information about the vehicle's systems, tips for driving a hybrid car, and other user-generated information.
Wikipedia: Often maligned for its free, user-generated content, science hounds need not hesitate to begin their search for a science encyclopedia online at the world's most famous online encyclopedia.
Since the site doesn't organize their tabs by genre, the easiest way to find holiday music is to search through the user-generated play lists.
Rather than using a single metric, OKC allows you to use any user-generated poll to determine who is match and who isn't.
Many resources are made up of user-generated databases, which subscribe to the idea that several heads are better than one.