Combining Smartphones With Credit Cards Taking Off

Smartphones apps that enable credit card use have blossomed in a huge way partly due to Square, a company created by one of Twitter's founders Jack Dorsey.  Earlier in January, we covered this topic, describing this new shopping trend as it sprouted up here and there. 

General media coverage since January has pushed the new credit card apps more into the public awareness...and its taken off. 

Square reports that 100,000 people signed up to use their app from October to December...3 months. Then, in January alone 65,000 people signed.  Square's COO Keith Rabois aims for the company to process $1 billion dollars in transactions throughout 2011.