I have seen people listing "memberships" on their CV. Do you have certain rules of thumb for what to list? I have some myself, which are basically memberships that have happened automatically, when I have been invited to give talks - like, come give a talk, and please join our "board of associates". I don't do any work in those roles, and listing them feels a bit like CV padding. I am in the beginning of my career (first post doc).
What is the normal practice?