A more efficient method to print out multiple coupons:
Instead of hitting refresh on the page, waiting for the AD to cycle through, once you have a page with the ad shown, browse to another page in the same window. When you go click back, to go back to the MSN page, the ad will be there still with a new code so you can print again.
Once you print, click forward, then back again and voila, a new ad to print from!
This worked on IE 5.5. Should work for other browsers as well.