First--this is a great site...I've been watching and reading for months...but this is my *first* post.
I registered with Milepoint.com before it even became a site because I heard about it through a friend in Mpls. They started with just a few partners but I see now they've gotten quite a few more. Their site
allows you to consolidate points from various frequency programs. In their marketing speak...they turn miles into money.
I personally haven't used it, although all my mileage programs are registered and it's kinda neat to see how much in $$ Milepoint says they are worth. For some shopping you can only use 20% of the cost in miles, but I do know they accept 100% miles for magazines.
Sorry Juanvaldez...I just looked and the Economist is not on their list.