Type a name to see whether it is free. … a year, and no name is needed to browse the rest of the site.

Names are rented, not sold. A permanent name for a single payment is a squatting market: the whole namespace gets bought once by whoever arrives first and never comes back. Here a name costs … a year, runs a year at a time up to five years, and returns to everyone else thirty days after it lapses.

Lower case letters, digits and interior hyphens, three to thirty two characters. A name cannot begin with 0x or be only digits, so it can never be mistaken for an address in a table.