Email signatures are bits of text, and in some cases images, that your email program attaches to the end of your outgoing emails. You might see the ability to add a signature to your emails as an opportunity to add flair and personality to your emails but I would encourage you to take the simple route with your email signature. Instead of requiring the reader of your emails to download images or read through your favorite quote, consider letting the email signature do what it was intended to do, inform people of who you are, your business and how you can be reached.

Tris at Pimp Your Work has an excellent post that will get you well on your way to crafting the perfect email signature. Read Six ways to make a good e-mail signature.