The best marketing aids are the ones that apply most to your particular goals and methods. For example, to pick a few really absurd examples: using text ads on a graphics site probably will not be the most effective; you can't put a thumbtack through a banner ad on a bulletin board; and stationery does no good for somebody who only texts. My point is only that you need to target your marketing aid to the audience to which it is most suitable. Know your audience.
