Update 2: Better Amazon Referral Link Builder
Genius volunteer Valor Poland came up with a better Amazon affiliate link builder for the Resurgence.
Click and drag this link to your bookmarks toolbar (or right-click and add to favorites):
new and improved amazon bookmarklet
Then go to Amazon, find the book you want to link to, and click the bookmarklet in your toolbar (or favorites); the URL should change to the one with the Resurgence affiliate ID. Copy this URL to use for your Amazon link.
If you get an error message, search again in Amazon for the book you're looking at and click on it. Then try again.
Update: ChristianAudio referral link builder (3/29/10)
Click and drag this link to your bookmarks toolbar (or right-click and add to favorites):
christianaudio bookmarklet
Then try it out: Go to a product page on ChristianAudio.com (here's one) and then click the bookmarklet you just added to your toolbar. The URL should have changed to include a referral code at the end. Use this URL when linking to any product page on ChristianAudio.com.
A big thanks to my great friend Matt Aebersold for helping me figure this out.
