Toysrus.ca still works because Canada didn't shut down all its stores. Can't say I feel bad for the states. Canada got Target and in less than two years all of them got shut down. Some companies stay and some have to go.
They brought it on themselves, through bad business practices and occasionally shady actions. They had a crappy website that constantly failed, and they refused to fix it, despite being in the age of Amazon. (And yes, I know this is fake, but I've seen several comments along these lines)
http://www.toysrus.com