So I got it setup and am understanding the structure better. I followed a few tutorials i found online and finally goto multiple domains pointed to multiple stored views with different themes.
The reason I went this way is it was my understanding they could all share the same cart and the products would carry from site/store view to next site/store view remain in the cart until they want to checkout.
And that they would share the same accounts regardless of which store view they logged into and that they would only have to register/log in once across all store views?
doesnt seem to be working for me though.