Email signatures are usually boring and sad places, containing only contact information or legal notices. Why not make it more useful by including a call to action to try to get people to do something you would like them to do?
I created a new email signature for my gmail account, check it out:
Free lunch or $20 discount on your next invoice if you review my business on Yelp & Google Places:
Of course this offer stands for all you friendly folks out there as well. My goal here is to get my customers to be sure to share their experiences using my business with other people.
Good idea or bad?