If you have Serve/Bluebird then you probably already know that you can take advantage of multiple Amex Offers, adding them to your Serve/Bluebird card either through Twitter sync or mobile app. But now you can also add the offers in the online account, the same way you can add them to your Amex cards, when logging in at american express.com.
However, this is not working as well as the Amex card offers. First not all offers are showing up. But also some offers are not saved after adding them to your account. So there’s some glitches to be worked out but this is a nice addition for people that don’t want to bother with multiple twitter accounts.