Becky Burckmyer, author of Awesome Grammar (Career Press, 2008, shares the “top 10” grammar errors she has seen in her 20-year career as a copywriter, writing coach and seminar leader:

1. Incorrect placement of quotation marks. Note that quotation marks go OUTside periods and commas, whether the little marks are part of the quoted material or not:

Archie has written a song, “Green Christmas,” which I think you should hear.