Don't know if this was posted before but the search function is NOT working again...

From the ClickRewards newsletter:

Now you can get your back-to-school shopping done and earn DOUBLE ClickMiles (TM) at the same time! Because ClickRewards and MSN Shopping have joined together to offer you a more rewarding way to shop online.

You must shop through the special MSN
Shopping/ClickRewards page...and you'll earn double ClickMiles on every qualified purchase made between 8/16/99 and 9/13/99.

And, while you're there, you can enter to earn ONE MILLION ClickMiles, brought to you by ClickRewards and MSN Shopping!