19th June 2005, 10:43 PM
One-year means "pay all at once for a year of play". "One-month" means "pay each month, and if you cancel your account will stop being charged" -- if you pay for a year, you've already paid for the whole year (or three months, or six months, or whatever). They generally give small discounts (like a dollar or two per month) for the longer periods of "pay all at once".