"20 Common Grammar Mistakes That (Almost) Everyone Makes"

Do you know when to use "which" versus "that"? How about "Who" and "whom"? "Affect" and "effect"?

Well, if you think you might need a grammar booster shot to guard against 20 of the most common mistakes almost all of us make, we have the medicine for you.  Go here to read a great article from LitReactor and learn how to avoid these mistakes.