Okay, Morrus, I have a question. And I'll start by saying in advance that if any of this comes off as accusatory or snarky, that's not my intention.
Cutting to the chase, what do you hope to accomplish by this?
My guess is, you're hoping that it'll increase traffic to the EN World store, and that's certainly a legitimate objective if you're planning to tie the two EN entities closer together. But from my (admittedly limited) viewpoint, I can't imagine any way in which this decision will accomlish that.
First, there are publishers whose works simply aren't available in the EN World store. So right off the bat, you've eliminated them from consideration.
Leaving aside that particular question, let me use myself, and Lion's Den, as an example.
I post press releases across several sites, whenever we have a new product release. It's in my interests to direct people to the storefront that most of them already know. They've likely got an established account. They know how to find things on the site. And they know how to link from the product I'm talking about to other stuff of ours that might catch their fancy.
Simply put, there's just no incentive for me to start funneling people to the EN World store. I'll simply continue to point them to RPGNow in my press releases elsewhere, and link them to my own site--which takes them to RPGNow--in my releases here. Or else I'll just have
all my press releases link to my own site, which still takes the customer to RPGNow. If I start trying to link everyone to the EN World store, I lose the expectation that most of them already have an account, and that means I lose the sales from everyone who A) doesn't want to bother with creating a new account at yet another site, or B) won't follow a link to purchase a product from a site he's not familiar with. And while EN World is very well known, its storefront is, I believe, somewhat less so.
Bottom line is, this does nothing for your own storefront, and it potentially inconveniences customers and publishers. There's no upside to it.
For this to really work as I believe you want it to, Morrus, you can't just tell publishers they can't link to other storefronts. You'd have to offer positive and tangible incentives for publishers to want to direct people to your storefront in particular. Now, such an announcement may be forthcoming, and I'd have no way to know about it. But I'm having touble thinking of what it could be, off the top of my head. And again, it still wouldn't account for people who aren't selling through EN World in the first place.