How do I join an activity?

Go into the activity that interests you and click the [Count Me In] button.

If you have received an invitation, you will be prompted with [accept] or [decline] buttons. Click on [accept] to accept the invitation and join in, or click on [decline] if you do not wish to attend.

Note 1: for "invitation only" activities you must be properly invited by the organiser.
Note 2: in some cases the organiser might specify limitations on who can join - based on age, gender, or sexuality.