Some of the things that the Nordstrom website offers to their customers include: customers can signup for an online account, shop from the Nordstrom's catalog, check their order and shipping status, pay their monthly Nordstrom bill, purchase gift cards and certificates, chat live with an online customer service representative or beauty specialist, signup to receive emails and physical mail, Nordstrom will respond to customers emails, and they provide phone numbers where customers can order products by phone.
I would definitely say that there is no confusion here (or at least there shouldn't be) as to whether this website is passive or interactive. Because the site is interactive, one might think that it would be safe to say that Nordstrom would definitely be subject to personal jurisdiction. That is however not exactly the case here.
I am sure there are many people who shop online that never take the time to read the "terms and conditions" on the site they are ordering from, but I have always thought that it is a wise thing to do.