multi-site cart

[eluser]theprodigy[/eluser]
I really don't like having to depend on the user to get to each site via a specific route. With the way my luck has been, if I do that, that will be the road least traveled. lol

What if I set it up as:

Code:

1. Shopping cart is it's own site, full domain access, just no design put in place
2. Each site is a design "front", pulls all necessary data from the shopping cart
3. Shopping cart site is the one that handles the cookies

I'm not exactly the biggest fan of cookies, but I believe that this way, the shopping cart domain is the only one setting and accessing cookies, so no cross-domain restrictions. Plus I don't have to worry about which way the user gets from site_a to site_b (they can follow links, open a new tab and type in a url, use their bookmarks, use jedi mind tricks, etc).

Ideas, comments, wise cracks?