The iPhone was once described by Apple CEO and co-founder Steve Jobs, as a 'revolutionary Internet communicator' and we can't really argue with that. Since Apple unleashed the App Store onto the iPhone and iPod touch owning public, the role of a mobile communicator has changed considerably.
Previously, the best way to get in touch with someone whilst away from your desk was to call them. Thing is, if you're anything like me, you hate talking on the phone. That's where SMS comes in, but those 140 characters ain't cheap, especially if you happen to reside in the United States.
IM, or Instant Messaging, uses the power of the internet to kick those pesky SMS charges into touch and, at least until iMessage arrives, presents the best way to send messages between iPhones...