Thus far I've identified just over 70 policies - a small number considering Australia has over 550 councils, 100 state departments and 18 federal departments, plus all of the independent agencies and statutory bodies across the nation.
This is even smaller when considering that I took a broad view and included policies written for the public as well as those written for agency staff or as models for other agencies to adopt.
Based on previous research I conducted in 2012 (which will be repeated next year), many Australian Government agencies claimed to have or be developing a social media policy, but hadn't considered whether to publish it as yet.
I consider staff social media policies as one of the standard documents that agencies should disclose proactively, and it will be interesting to see when I ask them next year whether agencies feel the same way about this.
Anyway, below's the spreadsheet of social media policies - please comment if you have more to add (I'm not ready to open it up to general editing as yet).