Amex allows users to sync their credit cards to Twitter, giving them access to special offers which can be purchased through tweeting a hashtag.
'Wallaby' connects all your various cards in one and selects the one that will give you the most rewards for each purchase based on your preferences.
Review the best in design, trends, culture, arts and fashion in our weekly 'What's Trending Now' roundup.
The American retailer turns an everyday gift card into a built-it-yourself toy airplane.
A Bing Initiative: A weekly round-up of the top ten most popular posts on PSFK--from culture to technology, art to business this list has it all.
A unique card design was created for a DJ by two Indian designers.