Be aware that these bonus gift cards can have expiration dates, which in my mind, makes them more like coupons. However, if gift cards were already on your list, these deals might be worth cashing in on.
Applebees: Buy $50 in gift cards, get $10 gift card
Bahama Breeze: Complimentary Sandstone Coaster set with $200 gift card order
Carrabas Italian Grill: Buy $100 in gift cards, get $20 bonus gift card
Chili’s: On their website, if you order $100 or more in cards, you save 10% off your gift card order.
CiCi's Pizza: Buy a $20 gift card, get a free adult buffet card (buffet card only good in January 2011)
Denny’s: Buy $25 in gift cards, get $5 card free (limited time, but doesn’t specify ending date)
Friendly’s: Get $5 bonus card with each $25 gift card purchase
IHOP: $5 off your next visit w/purchase of $25 card (in store only; offer expires 1/31/2011)
Melting Pot: For every $10 donation to St. Jude's Research Hospital, get $20 Fondue for the Kids Card good through Dec 2011 (http://www.meltingpot.com/shoppe.aspx?c=10)
Outback Steak House: Buy $100 in gift cards, get $20 gift card
Red Robin: Buy $25 in gift cards, get $5 bonus bucks OR get a 20% Discount off each $500 worth of gift cards purchased.
Steak & Shake:Free $5 certificate when you buy $20 in gift cards (through 12/31)
Taco Bell: Free large drink with $10 or $20 gift card purchase
TGI Fridays: $5 Bonus Bites card with purchase of a $25 gift card
Uno’s Grill: For every $25 in gift cards purchased, get $5 voucher back.
Wendy’s: Buy $15 in gift cards, get a coupon for their new sea salt fries
Check the restaurant’s sites for direct links to offers. You may need to order online instead of picking them up in the store. Not all listed above had free shipping though. Did I miss someone? I probably did. If you know about a restaurant gift card deal that I don't have listed here, please post a comment below.