Great article that discusses the state of mobile payments, including the battle between a few high profile start ups in this space (Boku & Zong)

Some would say our cell phone bills are high enough already. But two emerging start-ups are hoping to make mobile devices a hub for one of the hottest trends on the Web: micropayments.

Enter Boku, which launched officially on Tuesday with a whirlwind of announcements: its public launch after a year in stealth mode, its acquisitions of smaller companies Paymo and Mobillcash, and a $13 million round of venture funding led by Benchmark Capital with contributions from Index Ventures and Khosla Ventures.