Through December 31st, American Express is offering a $100 statement credit on Dell.com purchases of $599 or more when you sync your eligible AmEx card with Twitter and send a short Twitter message with #AmexDellOffer. Must use the synced AmEx card for Dell.com purchase.
#AmexDellOffer is dead. I got:
sorry, max # of Cardmembers have enrolled in #AmexDellOffer. Visit http://aexp.co/faves for more offers