This is currently the most common version of this hoax:

America Online is planning on charging an extra $4.99 fee per month to all users for accessing web pages...this will be in affect January 1, 2000 for the new billing month...each person this is sent to will count as a signature...if more than 50% of America Online custumers sign this then the new billing plan will be dropped...please forward to everyone!...thanks...