I only have 2 discount cards which I maintain. One is from our company as tied up to our company's ID and the other one is from a credit card which I have for the past 9 years. You can just imagine the points I have accumulated from that one.
The good thing with these 2 discount cards are that we can use them almost anywhere here in the Middle East. The one tied up to my employer is widely recognized here in UAE and gives a hefty discount on fashion, medical products, services, food and travel.
It will be nice though if these discount cards can tie up with major international shopping online stores. I am browsing through my favorite web stores for the best promotional products online. I can't help but think of my discounts cards with plenty of points. Such a nice thought!