And all the major credit card brands all have "most favored nation" clauses in their terms of service, so if Discover gives you lower fees, you can't charge less for Discover than for Visa.
Exactly. Amex has become almost worthless in the US for me because most retailers don't accept it. (When I've asked them why, they say the fees are too high and Amex takes too long to pay them.) Amex still works for airlines and hotels, but not much else.
Heh. Here in .au Amex acceptance is pretty limited in most smaller businesses, but it's universally accepted at supermarkets and department stores, upmarket restaurants, etc. Smaller businesses, as well as hotels, tend to charge surcharges of 1-4%, if they accept Amex at all.
