Comparison of OAuth providers

Comparison of OAuth providers

Are the accounts unique? (Are multiple accounts discouraged?)

The reason I made this page is to try to find ID providers that supply more or less unique accounts.

Note that no one can really guarantee unique accounts unless they can use data from the authorities (and even the authorities' data may contain false entries).

Provider Unique accounts? Ref*
Facebook Yes
Google No
Twitter No
Amazon No
Yahoo No
Reddit No
Stack Exchange Yes
LinkedIn Yes
Flickr No
GitHub No
Instagram No
Myspace No ref
Microsoft No
OpenStreetMap No
Paypal No

*For references one can usually search for "Can I have more than one xxxxx account".

See also:

Do you know of any other OAuth provider with unique accounts? Make an edit or a comment.