American Express offers cashback through Foursquare app

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For a limited time, you can earn money back at certain retailers by linking your Amex card to location app Foursquare.

If you're an American Express cardholder and you have a smartphone, you can now get cashback at a house of retailers via the Foursquare app.

Foursquare is a location-based app that allows you to signal where you are in the world by 'checking in'. I have to confess I've never really seen the point of it – until now.%VIRTUAL-SkimlinksPromo%