I have put up a website for my own use. It is mainly to display photographs I take when on our BBTA local rides. It gives members of our club a place to download the pictures and ride reports.
You might also find it entertaining...
The site is at http://rides.simcomcity.com
If you want to take part in social bike rides around Brisbane, then you should have a good look at the Brisbane Bicycle Touring Association. While this is technically a touring club (well, at one stage it was), the main activities are now short weekend social rides. Check out http://www.bbta-au.org