We're taught to write sales pages only for the prospect.
BUT these days online, if you're depending on an affiliate base to drill that sales page with traffic, then you need to also focus on writing a sales page that's attractive to affiliates.
This is sort of a vague thing... Meaning I can't give you any general rules about this.
And this is because your target affiliate is probably different than other target affiliates.
Some only care about EPC no matter what's on your page... some care about how hard core your message is...
But we know that an affiliate takes one good look at your sales page and decides whether to promote or not.
So if you have conservative affiliates, you can't expect them to mail some kind of in your face, kickass John Carlton type copy (even if it does pull like crazy).