I think we can all use some good news, confirming that humans are basically good. Have you ever "paid it forward" like this, and/or have you ever been on the direct recipient of a "pay-it-forward" action (see details)

The staff at Dairy Queen in Minnesota was almost overwhelmed be a three day streak of customers paying it forward for the person behind them in the drive-through. I’ve been on both giving and receiving end if random acts of kindness, many involving total strangers. If you have, please share your experience.