Microsoft continues its cross-promotional activity with non-gaming brands, and is putting Halo 4 once more on the front line. This time, American Express wants your attention. If you have an Amex credit card, you can sync it with your Xbox and "unlock exclusive offers from great stores including Topman, Cineworld, and Carphone Warehouse."
Sounds great. There is a tenuous link to the whole gaming thing, though - you can "earn more special offers by reaching specific achievements when you play Halo 4." We're not entirely sure what such special offers would be. Maybe it involves money-off vouchers for Doritos and Mountain Dew.
If you're not bored or sick to death with the whole corporo-tie-in culture that seems to have befallen your gaming machine (and you have an American Express card), you can sign right up to this scheme by clicking here and following the instructions.