Share your insights or perspective on the financial matter presented in the input.

Should I collect receipts after paying with a card?
I've seen many people sign a restaurant credit card receipt and walk away.  Easy enough for the wait staff to add a tip and total.  I doubt this is a high risk area compared to others, but in general, why not take the receipt for verification, or in the case of a good that can be returned, the receipt might be needed.