It's simple to run a coupon on OpenFence.

1. Choose the Sign-up link from the above menu bar and sign-up as a business
2. When completing the form make sure that you check the box (Contact me about running an ad)

Understand that there is no need to wait for someone to contact you in order to create and run a coupon on this system. Once you complete the sign-up procedure you'll be emailed the necessary login information to complete the task.