Think different. Each website is different. So when running an affiliate program, be sure to offer a plethora of creative. Don't limit your affiliates to 3 or 4 banners. Your program will look more enticing to potential members, if you have more creative available that matches the look and feel of your potential affiliate sites. For example, Affiliate A's site may look nice with the blue banner, but the black and red looks nicer on Affiliate B.

And when running paid search campaigns, remember use YOUR different web pages to your advantage. Each campaign should be linked to a relevant landing page. This will help to increase your click to conversion rates.