Interesting idea, but I guess it would only pay to do this if you have a mileage earning debit card. Otherwise, you would be giving up 100 credit card miles to get 25 extra grocery miles.

I agree with you about the idea of a list. I might get on it to make sure I find out about everything, but it seems to me that if we take the list idea to it's ultimate conclusion, there would be little left to post on the public boards besides the official program rules. The most people benefit when we share as much as possible.