The payment service lets U.S. merchants and businesses that run Groupon daily deals accept credit card payments at a lower rate than other providers.

FORBES: This Week in Credit Card News

As Crowdtilt expands into mobile he thinks that users will find it useful to collect group payments for their daily activities, rather than just well-planned events.

FORBES: Crowdtilt Raises $12 Million From Andreessen Horowitz And Sean Parker (For Real This Time)

Square Register serves as a free full point-of-sale system for businesses to accept payments, track inventory, and monitor daily reports, empowering them to make smart decisions for their business.

ENGADGET: Square launches in Canada, streamlines payments on the world stage

This App lets consumers manage gift and loyalty cards, daily deals, coupons, offer searches, purchases, shopping comparisons, social gifting and mobile payments.

FORBES: Clutch Gives Gift Cards Mobility

Libor, a daily average of borrowing costs announced by a panel of London-based banks, is used to calculate payments on hundreds of trillions of dollars-worth of financial contracts.

BBC: Barclays senior staff 'linked' to Libor affair