Hi There, I've been using DAP since January 2010 for my member's dashboard at clickbump.com
ClickBump Engine is my core product. Its a WordPress Theme for Serving Ads and Product Reviews for Internet Marketers. I also have two additional products, ClickBump JumpStart and ClickBump SEO!
I'm using DAP version 3.9 to run the member's site for all three products, plus ala-carte templates that plug into the core engine. I mainly use it for delivering my products to the end user once they've cleared checkout, and also to provide updated versions. I like the email blast function for announcing new products and product update notices.
I'm about to start using ClickBank for ClickBump SEO! affiliates and am eager to test the new ClickBank IPN integration.