Many colleges and universities maintain web pages that list businesses which offer discounts to students, faculty, or staff of the school. Some of these pages feature live HTML links to the vendors.

Offering a discount can earn you a valuable .edu link and may also each you some business.

This technique works best for local business and eCommerce sites, of course.

You can find a large number of these pages by searching for discounts Or, you might search for only schools in your area.