Of all the features that arrived when iOS 5 reached the end-user back in October of last year, iMessage has been arguably the most significant, and by now allowing messages to be sent and received in a faster, more secure manner across a variety of platforms, it has to go down as one of the best in the business. Granted, it has its occasional downtime, but it's not bad as is, and with the service also arriving to the Mac with OS X Mountain Lion, it will almost certainly become the sole mode of quick communication to many Apple enthusiasts.
