MaximumPC have added to the 'Year of the Linux Desktop' articles in circulation. Having seen this story nearly every year I'm pessimistic, but perhaps a little less so with the rise of user friendly distributions such as Ubuntu, and the Vista situation.
"When Evans Data released its survey on Tuesday showing a sharp shift toward Linux (and away from Windows) among developers in North America, the Linux world went wild. Wistful pengiun heads heralded the coming Open Source Age. But the real measure of OS success is in the number of users, not the number of developers. After all, most of the world's PCs end up in the hands of ordinary people who have no interest in coding. Fortunately for open-source addicts, there are several signs that the coming year could bring a sea-change among end users, making 2008 the year of the Linux desktop."
Full article at MaximumPC