Como posso ver os cadastros no Facebook?

[david (David Taylor)]

You could use the Discourse Data Explorer for this.

Associations with facebook accounts are stored in the `facebook_user_infos` table, so a query like this should provide a list of users that have connected their facebook accounts:

SELECT user_id from facebook_user_infos

Edit November 2020: data for facebook associations can now be found with the query

SELECT user_id, last_used FROM user_associated_accounts
WHERE provider_name = 'facebook'