It's bad enough when sites require you to use Facebook to log in. At least Facebook can't send you to jail and you can have (with some effort) a pseudonymous Facebook account.
Sites will use such a service to invade your privacy even further, and the government has a record of every site you've logged into and when.
Sites will use such a service to invade your privacy even further, and the government has a record of every site you've logged into and when.