Even as someone who likes unique logins with email and usernames, I just double checked my Github account and I've used that to log in to 6 sites. As I finally

Even as someone who likes unique logins with email and usernames, I just double checked my Github account and I've used that to log in to 6 sites. As I finally deactivated my Twitter account last week and didn't check... I'm 9)% I didn't use "Login with Twitter", but I can't say for sure. If some site would only provide Login via Google or Twitter I may have. Probably nothing important, and I will find out sooner or later if I need to recover.