The facebook site is normally only used for MAKO trips away and photos. Most of the daily crap happens on the google group where there are mails every second day of people heading out to various spots for a session and catch ups for drinks. Its done that way because you can reply to mails once you're registered and it goes to everyone in the group.
Its generally whats used for the "Hi, I'm headed to altona this afternoon for a quick session, anyone want to join up" kind of messages.
Check out
groups.google.com/forum/?hl=en#!forum/makoaustralia and register and you should get mails on a more regular basis.