I just found a new ArtFire blog via Twitter that is dedicated to showcasing ArtFire shop windows, in fact it is called Shop Windows at ArtFire and isn't run by ArtFire admins but by users of ArtFire.
You need to be a verified member of ArtFire in order to be featured because they utilize the Rapid Cart, so that visitors can just purchase the item they want without having to join ArtFire. This is a great place for sellers to describe their shops, list their sales, give aways, newest listings, etc. I think this has the potential to be a great source for promoting your shop.
I also wanted to mention that I opened a second shop.... after reading the ArtFire forums, I've decided it would be best to have a separate shop for my de-stash so that it doesn't get in the way of my patterns and jewelry and home decor,etc.-- my actual handmade stuff versus my supplies for sale. So, if you have the time, check it out in a few days. It is called 3PeepsDestash