Is this tacky?

FH and I have guests scattered around the country and many will not know where we are registered. (We can't guarantee that word of mouth would spread the news their way and many of these guests aren't being invited to a shower because of their distance, so they won't learn via a shower invite).

Would it be tacky to list our two registeries on our wedding website? All of our guests already have this website address. Has anyone done this?