You're welcome!

No ads yet on Medium (maybe one day :). You can do affiliate marketing with the Medium member referral link.

You can also refer to any other affiliate marketing program. I would just do so rarerly and with a clear indication that link is an affiliate link.

There are Medium rules about affiliate marketing so it's always good to review those. And some publications allow it while others don't.

Most publications are ok with the Medium referral link.