Below is a link to an article about offering discounts for people that use cash instead of credit cards. As you know credit card fees really eat into your bottom line. It is a good idea to remind the people collecting the money to ask if you would like to use debit or credit. Can save you a bunch.
http://journalstar.com/business/local/article_b1eb0758-d0c9-11df-8274-001cc4c002e0.html
