Diners Club, Discover, and MasterCard
OK, I am a little confused about their relationship. Can anyone explain?
Sometime ago my Diners Club card became a dual card with MasterCard, meaning it is now acceptable wherever MasterCard is accepted.
I also have read that Diners Club International is a business unit of Discover Financial Services.
But MasterCard and Discover are 2 different financial companies that actually compete with each other.
So what's the relationship here?
How may it affect how I use the cards, since I also have a regular MasterCard and Discover card? Of course my goal is to maximize my miles and points.