jackal,

I see your point and you make good arguments for Blue Chip earnings vs. crediting for airline miles. I guess I have always viewed points or miles earned from car rentals as being small potatoes.

I probably do about 16 rentals in a year and then would end up with one free day in Blue Chip credits. I agree that would be more valuable than 800 air miles (16 x 50). I need to rent cars and getting some kind of additional benefit out of it is good. I just have a hard time getting too excited about it.

I have generally credited my rentals to some of my fringe airline programs as a way of keeping them active. Kind of like throwing your change into a jar. I do see how it can add up over time.

I might as well start crediting to Blue Chip and get a bit more return.