Pinger, the neat little service that lets you send really quick voice mail messages to people (think of it like a combination of SMS and voicemail), announced at CTIA that they've upgraded their service so that you can send these quick little notes to anybody in the US. Previously, if you sent a message to a non-member, they had to muddle through the signup process -- which was my biggest roadblock to using it.

They also showed off a neat little Blackberry app that allowed you to browse through and send Pinger messages - and also said that they're working on a WM version. Neat.

Pinger, Inc. today expanded its service to tens of millions of Blackberry and US mobile phone users. Pinger, which provides text messaging for your voice, released a mobile application to optimize the Pinger experience for Blackberry users. In addition, Pinger expanded general support for mobile phones on nearly every US mobile carrier

Read: Pinger Press