Companies that give out points when you use their services

[BrianR]

I have six that I use with varying degrees of frequency.

All are fuel club cards, which doesn't help anyone here but me. I generally buy something like 2000 gallons of diesel per month. I get points on my cards that can be redeemed for anything from a free shower to fast food to restaurant coupons to gift certificates or discounts on merchandise. Mostly I let em expire as I rarely buy the junk they sell anyway. But showers are valuable. If I have one that I'm not going to use I've been known to give it away but that's about it.