Logos are so yesterday. Which is probably why so many marketers design logos as if they haven't done it since first grade. To review, here is a list of things to do and not to do. Among them, avoid using too thin of a line weight; keep your logo simple and meaningful; keep it balanced and in proportion; stay away from fad typefaces that will soon be old-fashioned; and steer clear of the obvious in designing a logo, because it's probably overused.