One of the first blogs I followed was Judy Webster's UK/Australia Genealogy Blog. I think it is probably aimed at Aussies with British roots, but it works for me to - British with "lost" (now found) Aussie cousins. Judy is a professional genealogist and a great source of information. Check out her website Judy Webster's Genealogy Advice if you have an interest in Australian Family History (especially that of Queensland).
Judy is one of the coordinators of a new project, and that's what I would really like to highlight. It is the Genealogists for Families project. The inspiration for the project was Judy's father, who had an altruistic streak - he would lend his "Do Good Money" to local hard working people in need of a little short term help. In his honour, Judy has set up the project which, like Judy's father, lends money to those in need. To volunteer you can invest $25, which will be repaid. Visit Judy's the Genealogists for Families project for more details.
Good on you, Judy!