That is not a problem at all. Whenever you have a centralized oauth service, there will be a possibility to track its user. I don't see a way how any company mi

That is not a problem at all. Whenever you have a centralized oauth service, there will be a possibility to track its user. I don't see a way how any company might guarantee that it doesn't track me so I'd believe it. Therefore I'd prefer to have an alternative to oauth with old school account creation on each and every website with separate login/password pair.