The list from the AARP:
- Grocery bags.
- Airline seat assignments.
- Air for your tires at a gas station.
- Resort Amenities.
- Restaurant reservations.
But there are still some great freebies available. For example, reading the content on this website, unless you consider the cost of all the wasted time and diminished brain capacity from being exposed to all this drivel. Actually, looking at it that way, this might be the most expensive site you ever visited!