None. Perhaps one of it triggers some deletes or privacy related changes. This has actually been the case in Germany (and perhaps even EU) for a while. Mostly

None. Perhaps one of it triggers some deletes or privacy related changes. This has actually been the case in Germany (and perhaps even EU) for a while. Mostly because courts have ruled that cancelation must not be harder than signing up. In Germany they were especially trying to force you to send letters or fax cancellations when you could sign up or upgrade via phone, e-mail or web form. Courts said no to that practice.