Is there any free/paid Windows emulator for Mac OS X? @Ian - Yes, "You could Google that" is a terrible answer—but these are comments, not answers. Given that "question does not show any research effort" is a valid reason to downvote and people often want to know why their posts received downvotes, why not let the OP know how to improve?
Do Macs need to be defragmented? @Graham - is that the point at which you stopped reading? There are a few other sentences in that (lengthy) essay, also.