One of iOS 5's most anticipated features is iMessage, an Apple instant-messaging service that can be used only among iOS devices. This is essentially Apple's answer to BlackBerry Messenger, RIM's own internal messaging system. The idea behind both messaging services is that they don't cost anything extra and won't deduct from your text messaging plan.
The catch, of course, is that both exist only in either the iOS or the BlackBerry ecosystem. Here, we take the opportunity to compare both messaging services. … Read more