Loyalty/Stamp Cards?

[xDramatick]

Anyone use these?
You get them at food/drink establishments so you get free stuff after you've been a certain amount of time. I've got these atm:

- Coffee Republic [one stamp per drink, ten stamps = free drink]
- Krispy Kreme [one stamp per drink, six stamps = free drink]
- Nandos [one stamp per meal, 3 stamps = free 1/4 chicken, 6 stamps = free 1/2 chicken, 10 stamps = free whole chicken]
- Shaketastic [one stamp per drink, 8 stamps = free drink]

They're probably not worth the effort but I go Shaketastic and Coffee Republic LOADS so it comes in handy. Nandos/Krispy Kreme's an occassional thing so it'll be better after a while hehe.
I'm so cheap.
Anyone else use these?

[Fom]

I love these things, I have a nando's one at the moment. They are great ideas we have them in my work, but we have made them electronic swipe cards now... every £1 spent you get 20p on the card.

[CiaraD]

I used to have one for some smoothie place but I kept forgetting it so I have like 5 cards with one stamp on each lol