A bit annoying.
I just clicked on one of the links in Em-Press's Shameless posting and it opened as Lulu Canada. No real problem with that, but a large box suddenly overlaid the page that makes it impossible to view the entire page (the box slides up and down it) telling me that I am on the Canadian store, but the UK site is my Preferred store (as if I did not know) click to change. So I did and it closed the original target page and landed at the standard Lulu Buy page.
PS: Em-Press. A Preview would be handy.