Thanks for the tip. I just spent 3400 HHonors points and 600 Dividend miles on three subscriptions I've been wanting to start. I feel that I got exceptional value for the HH points (a year of SI and a year of Runners World) and adequate value for the US miles. (Just looking to create a redemption activity, since I have no idea when/if my DM miles expire.)

One thing to be careful with on Milepoint: you have to set your preferences carefully BEFORE you go picking out magazines to ensure points/miles are withdrawn from the correct account. Another approach would be to never have more than one travel program affiliated with Milepoint at any time (add and delete as needed) - just to be safe.