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Twitpay brings micropayments to Twitter

An experimental app lets you shoot money over to your friends through Twitter messages. It's not perfect, but something Twitter could use to make a buck or two.

By December 18, 2008


Start your own business with Square for Android

We checked out the mobile payment app Square, which can track cash payments in addition to letting you swipe credit cards from your Android phone.

By May 19, 2010


PayPal tries rewiring e-commerce with new interface

eBay is trying to keep developers from straying to the Amazon fold with a new payments interface with more flexibility for new types of online purchases.

By July 23, 2009


Understanding MapReduce and Hadoop (Video)

MapReduce and Hadoop power some of the most data-intensive applications. This video presentation explains how they work.

By March 11, 2009