What are the rules regarding domain names, spelling, etc.?
There are some rules regarding .fm registrations. The domain name can be 3 to 26 characters long. All letters (A Z), numbers (0-9) and hyphens are available to used, but hyphens cannot appear at the beginning or directly in front of the TLD. Upper case and lower case characters are not considered distinct from each other. A domain name cannot have spaces or other special characters.