I think I’ve finally found a free iPhone app I can actually be excited about. PING isn’t a game or a calculator, or a news feed, PING is the iPhone version of Blackberry Messenger. The BBM was the only lingering regret I had when I moved to an iPhone, but with PING I can freely messege any other iPhone and iTouch user for no charge. The interface works exactly the same as SMS, but it uses data instead. This means PING negates any text charges to and from fellow iPhone users. Now the goal is to get everyone I would ever message off of More >