To coincide with the Australian census on August 8, the expat organisation Advance is running its own census of Australians abroad. Cleverly, the way they get you to do the census is to join their organisation. To participate, click here.
Update, 8/8: When I clicked on the survey link last week, it merely took me to the part of the website that asks you to join Advance. Now, they have a unique One Million More survey website, so you don’t have to join to be counted.