What is Endorsement monthly drop?

I can’t find this in the help files, but I got some extra chips today for “Endorsement monthly drop”. Does anyone know what this is?

Hi BridgeHack,
If you click on the topic In the News and Announcements category “New Feature - Endorsements” Fizzymint has explained how this works and what the benefits of endorsements are.
Best of luck at the tables and Welcome to the Forum.