A club is a corner of the community run by the people in it rather than by the site administrators. A club can have its own forum, photo album, calendar and blog, and what is inside is for its members.
There are three kinds:
- Open — press Join and you are in.
- Closed — you can see it exists and ask to join; a leader decides.
- Private — you will not see it at all unless somebody invites you.
Leaving a club means you stop being able to see what is in it. Anything you posted there stays for the members who remain.