Without commenting on the merits of the complaint, I will note that the Computer World article points out that
Jeffrey Chester, founder and executive director of the Center for Digital Democracy in the U.S., said the Canadian organization "has lifted the veil that covers Facebook's extensive personal data collection apparatus." [and said that]...It's a giant privacy wake-up call about Facebook from our friends up north."
My own view is a bit different. I don't think this is a wake-up call at all. American consumers already know that there are some serious privacy issues surrounding Facebook. In fact, there is already a lawsuit in U.S. court based on Facebook's beacon program (see, e.g., here).. The problem is that U.S. consumers don't really have much they can do about privacy. The lawsuit about beacon is only possible because of a very narrow provision of federal law which covers video tape rentals and sales records, but that kind of sui generis protection doesn't really translate into decent coverage for personal information. Thus, my view is that the Canadian complaint, to the extent it's a wakeup call at all, is a wakeup about the state of U.S. privacy laws, not a wakeup about the threats to privacy.