A resource created by a publisher to help prospective ad buyers evaluate advertising opportunities.
Media kits often contain information about rates, ad sizes and formats, targeting options, audience profiles, case studies, contact information, plus anything else that helps buyers make informed decisions. There
are no static rules, and media kits vary greatly. However, they all share a common goal; to give prospective advertising buyers every reason and opportunity to make contact.
What Makes a Good Online Media Kit?
ClickZ (April 13, 2000)