The Zen Cart Blog Integration Contribution is now available. Using the CaRP utility from Gecko Tribe, LLC, you can easily add a page displaying your blog (or any RSS feed) to your Zen Cart.
A sample page is shown here in one of my demo carts. This contribution uses the Starter Edition of CaRP; by updating to the full edition of CaRP, you can get access to even more features. Here’s a sample page using the full edition of CaRP. The Blog Integration help page describes some of the features that come with the full edition of CaRP that are not available in the starter edition.