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Turns out you don't have to be a banker or a mathlete to get into the credit card business.

Millions of retailers have filed an antitrust suit against big bank credit card companies. The goal? Cutting interchange fees and ending a crushing monopoly

A mobile app that lets people send gift cards to friends is not the work of a deals company. But it is using discounts to deliver customers--especially the specific demographics individual merchants want--into brick-and-mortar stores. Daily deals have exploded into a $4 billion industry almost overnight because there’s no shortage of merchants who would like to lure online customers into their real-world establishments.

A look at three travel reward credit cards with added perks, like generous sign-up bonuses Amid heated competition, credit card companies are rolling out travel reward cards with added perks, including generous sign-up bonuses. Here are three to consider.

This chart, from Trendistic , shows just how wild Twitter is going over the Royal Wedding--and that's just for the word "wedding" -- "Will" and "Kate" are even more dramatic. 1

Credit card design has not changed much over the years. Now, Citibank is ushering in a new breed of credit cards with built-in computer chips.