They have been misused in books, journals, sales flyers that stores put in the newspapers, and I've seen it on billboards. Being one of those crazy people who actually owns a dictionary, I looked up both words to find the following definitions:
Compliment--An action showing praise and respect.
Complement--That which serves to complete; the full number required.
Our readers expect writers to know what they are doing, and that applies to not only our writing but our spelling and grammar. So we must be aware of our spelling and meaning of words along with all the other aspects of writing.
Faye M. Tollison
Author of: To Tell the Truth
Upcoming books: The Bible Murders
Member of: Sisters In Crime
Writers on the Move