Can't remember if this has been covered and too tired to read through again, but just wanted to remind everyone that there's a LeShop app.
I've just placed my first order via the iPod, and it's amazing! It's much better arranged than the online web supermarket, much easier to find things, and much quicker to zap in and out of product pages.
You can do the whole thing offline right up to placing the order, apparently (got wifi here, so don't know), and it fully syncs with what's on the PC - you get all your old shopping lists, etc, and if you start filling a basket on the iPhone/Pod, you can finish on the PC and vice versa.
There's also a Coop one, but only in national languages not English like the LeShop, and it also runs MUCH slower to navigate around the store. I haven't tried an actual order via this one yet, and at the moment I don't feel inclined to - the LeShop one is so good I shall be happy to stick with them for the time being. Or at least until Coop emails me another discount voucher.
kodokan