.mobi:  .mobi is a unique domain name, it is the first top-level domain dedicated to delivering Internet to mobile device, from the time you register, the connection between your mobile device and Internet exist. .mobi guides mobile users to made-for-mobile Internet content and services that can be accessed with confidence. There are 1.8 billion mobile phone users in the world, so the market potential is huge, with the strong function, mobile phone also can compete with PC and NB in the official business and commercial entertainment. Mobile phone has the ability to give the information service with its convenience and superiority. Therefore, .mobi will be more and more popular.