I paid for 1 day on
https://www.leakedsource.com/main/ $4.
I then checked all my userids, email addresses and my friends email addresses.
Most seemed to be the LinkedIn hack of 2012 and something related to Adobe this year.
A couple showed emails used on the Ashley Madison site and something called Fling.com (NSFW).
I called those 2 friends and told them. I know neither of them would use those sites. But if those sites send an email for whatever reason, and the email address is shared with SHMBO, there may be some explaining to do.