My fiance and I are registered at Bed Bath and Beyond. Thats were I got my template for our wedding website. In order to get to the website you have to search for us on the actual Bed Bath and Beyond site. How would I word this information on the "save the date" cards so people can look at our website and won't feel obligated to buy us a gift?
It isn't appropriate to mention anything about registering on these. So, you couldn't politely mention this because it is through your registry. You may mention that you have a site and list your email on an enclosure.
It is unfortunate that you couldn't create a site without using BB&B's site. There are many out there that offer free blogging.