The above image, taken from this blog, is sobering for a long-time Windows guy like myself. The Mac marketshare numbers continue to grow, and if this image is any indication what the average college student is using, I wonder what sorts of shifts we’ll start to see in market share five years from now? As much as I like Vista, it just doesn’t measure up to what I was expecting to see from an operating system that had been worked on for five years. Will Vista be remembered as the tipping point for when Microsoft’s empire started to fall? I sure hope not, but I’ve lost count of the number of people I know that have switched to OS X…