Discover is pushing even harder to capture more of your holiday spending, with another offer for existing Discover More card holders. From FW:

Login into your account and the advertisement is on the front page.

“From December 1, 2007 through December 31, 2007, use your Discover Card to get 5% CashBack Bonus at grocery stores.

Get whatever you need for your holiday celebration and earn 5% CashBack Bonus on $200 in grocery store purchases.

Note that since the offer is for up to $200 in purchases, it only amounts to a max $10 bonus, and that the Discover Miles and the Open Road card are not eligible.