Difference between sign up with Facebook/Google/etc and log in with Facebook/Google/etc
问题 I am currently trying to implement Facebook, Google and other third parties connectivity for my web application. When I browsed many webpages I noticed there are two options, take the Facebook option for example: Log in with Facebook and Sign up with Facebook. From what I could tell they both do the same thing, if you don't have a user in your database with Facebook retrieved email, the app creates one and logs you into the new account. The same can be said about Google login/signup. What