Wikipedia
The term geodomain refers to domain names that are the same as those of geographic entities, such as cities and countries. It is unrelated to the geographic subdomains of the .us country domain. Examples of geodomains are Atlanta.com, LosAngeles.com, Texas.com and Memphis.org. Since geographical names are limited in number, and have good name recognition, geodomains are highly valued, with .com and .net extension geodomains valued the most highly. Geodomains tend to provide a virtual representation of the locations they serve—for example, Hawaii.com is heavily tourism focused, while Syracuse.com and Madison.com have more local content. Collectively, geographic domain names are estimated to represent approximately over 500 million dollars a year in gross hotel bookings alone.
The 2008 GeoDomain expo was held in Chicago on July 10–12.