Surely there's a way to avoid implementing your own account system that doesn't drag in the massive unrelated architecture of a Facebook, Google, or Twitter. You don't even need SSO like OpenID.
Is there a company that just sells a no-frills user enrollment and login service and also provides strict isolation between sites? (I.e., they resist the temptation to leverage their aggregate user base.)
Is there a company that just sells a no-frills user enrollment and login service and also provides strict isolation between sites? (I.e., they resist the temptation to leverage their aggregate user base.)