Yes, you should advertise. I can't understand why you wouldn't advertise, unless you're afraid that access to the website might be too tremendous, but I don't think we're there yet.
I think advertise, yes, but also make sure that you give sufficient explanations as to what the people will find there, because when you sift through the sites, there are so many different things and they may be difficult to sift through. The Canadian site is just so huge—there are so many things—that to figure out what might be of use to you might take a while. So make sure the advertising educates the user.