The on-demand car service declares its loyalty to the credit card company with a new payment integration.
A partnership between the credit card giant and the social network is designed to let Amex users make purchases just by tweeting.
It seems some toes may have been stepped on with Google's debut of its new Wallet app -- American Express never agreed to be included in the upgrade.
American Express executive Dan Schulman: It's clear mobile and commerce are on a collision course.
American Express is promising its cardmembers special deals in return for giving the company access to their Facebook interests, likes, and friends.
Building on a small test that linked American Express and Foursquare accounts, the location-based network is rolling out the new program nationwide.
Hulu Plus comes to exactly six Android devices, the Winklevoss twins finally drop their lawsuit and accept their $65 million settlement, and Foursquare and American Express partner to bring discounts to customers who check-in.
Senate commerce committee wants the big credit card companies to explain how a Web marketing scam involving top retailers went on under their noses for years.
Over 1 million customers' details have been compromised because of a data-archiving company's server being sold on eBay.
Quicken credit card transactions: a free upgrade to Quicken 2000 for some?; another AmEx work-around reported