Actually, I've found that any merchant worth doing business with generally accepts American Express. I've been using mine for years and my "Visa backup" hasn't

Actually, I've found that any merchant worth doing business with generally accepts American Express. I've been using mine for years and my "Visa backup" hasn't been charged in the past year or so. AMEX is easily the best credit card company with the most perks and amazing customers service. I would be quite unhappy if they went out of business.