I was at the store last night and found a rebate form on a tearpad that said if you buy $10 in select ConAgra foods and $50 total in groceries at Publix, you can get a $10 Publix gift card by mail. I did a similar deal last summer at Publix and it was definitely worth it. Make sure to keep your eye out for this rebate form. I found in on a large display at the very front of the store.
The promotion dates are from May 28, 2009 through June 30, 2009.
Here is a list of the brands to purchase:
Peter Pan Peanut Butter
Snack Pack Pudding
Libby's canned meats
Crunch 'n Munch
Van Camp's beans
Hebrew National All Beef Franks