A logo should be a memorable, unique symbol of your business or organization. Depending upon your business, you might need a logo that can be used in many applications aside from internet use and business cards.

Use it on merchandising too.

Give customers items such as coffee mugs, caps, t-shirts, all printed with your logo. Naturally if you have a strong memorable logo with visual appeal, people will use these items, reminding not only them of you, but others as well.