Twitter has been working on several projects lately, all of which tangentially tie-in to one another. Their latest, Offers, might tie some of their more recent service together nicely. The aim of Offers is to let you grab a coupon right from Twitter, done via Promoted Tweets. All you have to do is click a button, and the coupon is yours. If you also have a credit card stored with Twitter (for their ‘Buy’ button), the coupon is then associated with that card.