Though why not? They speak english. It's a little smaller population wise than California. Why ignore it if there aren't any language or localization issues. One reason to be sure, already mentioned here, are arcane geographic licenses that lock content down on a per country basis. But for other SaaS web apps, go north!
As a Canadian in the US, I sometimes joke "Forget 6 degrees of separation, Canada only has 3 degrees of separation." I joined FB in 2007, but only because EVERYONE i knew back home was on it and asking me why I wasn't on. And I'm like, really? I hardly know anyone on it here (I was long past undergrad at this point).
Quebec, for instance, needs shipments ( of say electronics ) to be in bilingual packaging at least. I have seen that many new products are not released in Quebec alone but rest of the country gets it.
As a Canadian in the US, I sometimes joke "Forget 6 degrees of separation, Canada only has 3 degrees of separation." I joined FB in 2007, but only because EVERYONE i knew back home was on it and asking me why I wasn't on. And I'm like, really? I hardly know anyone on it here (I was long past undergrad at this point).