UPDATE 12/15/2016: It appears that portals may no longer be working for gift card reloads.
The original version of this post described using the "Spend...
Facebook and Uber are teaming up to integrate ridesharing into the Messenger app. For a limited time both new and existing users can get a free ride for signing up through the app.
Uber & American Express are teaming up to offer two free rides to/from Laguardia Airport for Platinum and Centurion cardholders who visit the Centurion Lounge.