I have been an American Express card holder for nearly 10 years. Recently, due to the struggling economy, Amex decided to place a credit limit on my account. Despite a perfect payment record, Amex decided to take this action. Apparently, paying your bills timely and carrying a low balance doesn't mean much nowadays. Don't think I'll be using my Ameircan Express card again anytime soon.
NOTE: the reviewer indicated that they are a client of American Express - Credit Cards