How Does The Cashback Work On Credit Cards And Debit Cards?

Posted by admin | Debit Cards | Tuesday 16 February 2010 7:57 pm

When I use my debit card at the store, it asks if I want like $0, $10, or $20 cashback. How does cashback work? And how would this cash back procedure work on a credit card?
Should I take a cashback amount when using my debit card? I see other people in line in front of me using their cards and when ask if they want cash back, some of them press no on the key pad.