||This article includes a list of references, related reading or external links, but its sources remain unclear because it lacks inline citations. (January 2013)|
|TLD type||Country code top-level domain|
|Registry||dotFM (BRS Media Inc.)|
|Sponsor||FSM Telecommunications Corporation|
|Intended use||Entities connected with Federated States of Micronesia|
|Actual use||Much use related to FM radio; little related to FSM|
|Structure||Registrations are available directly at second level|
Except for reserved names like .com.fm, .net.fm, .org.fm and others, any person in the world can register a .fm domain for a fee. Much of the income from which goes to the government and people of the islands. The domain name is popular (and thus economically valuable) for FM radio stations and streaming audio websites (other similar ccTLDs are .am, .tv, .cd, .dj and .mu); a notable example is Last.fm, a social music website. Such unconventional usages of TLDs in domain names are known as domain hacks.
Social media use 
The .fm domain extension has also been used by various companies outside of the audio streaming industry or the Federated States of Micronesia. One example, Ping.fm, is a social networking tool allowing users to update various social media services directly from their website. Other examples include Fastmail.fm, an email provider owned by Opera Software, Last.fm, an Internet radio streaming and statistics service, Smart.fm, an online learning tool, Tastebuds.fm, a dating website for music lovers, Turntable.fm, a social media website that allows users to interactively share music and CHARGED.fm, an event marketing and social ticketing site, Reaper.fm a digital audio workstation software site, Ask.fm, a website in which one can ask friends or strangers, providing they have their unique URL (ask.fm/------), any questions, which can be seen publicly through the page. Many commercial radio stations also use the domain extension.