Washington State University English Professor Paul Brians has created a website that lists common errors in English usage. Considering the subject matter, the site is surprisingly entertaining. Here is an example of an entry:
MOOT POINT"Moot" is a very old word related to "meeting," specifically a meeting where serious matters are discussed. Oddly enough, a moot point can be a point worth discussing at a meeting (or in court)—an unresolved question—or it can be the opposite: a point already settled and not worth discussing further. At any rate, "mute point" is simply wrong, as is the less common "mood point."
MOOT POINT"Moot" is a very old word related to "meeting," specifically a meeting where serious matters are discussed. Oddly enough, a moot point can be a point worth discussing at a meeting (or in court)—an unresolved question—or it can be the opposite: a point already settled and not worth discussing further. At any rate, "mute point" is simply wrong, as is the less common "mood point."