Just see it on the Delta.com, Transfer Bonus has been increased from 50% to 75%.. Is it a good deal? They had 100% transfer bonus couple years ago, but I don't think it will come back again.

"To celebrate Thanksgiving, we’ve increased our offer. Buy, gift, or transfer miles now through November 30, 2010 and we’ll throw in a 75% mileage bonus, instead of our original 50% offer, to help you get to your next vacation even quicker.1

Buy miles for your account with this increased offer and we'll now give you a 75% mileage bonus. Or if you transfer or gift miles to friends or family members we’ll now give the recipients a 75% mileage bonus."