As reported in the original NLA post:
Now you can contribute your images to PictureAustralia by loading them into our two groups available on FlickR, PictureAustralia: Australia Day and PictureAustralia: People, places and events.
The PictureAustralia: Australia Day group is a collection of images relating to this day of national significance.
The PictureAustralia: People, places and events group is a collection of images depicting the people, places, and events, which make Australia unique.
Why not search PictureAustralia for a streetscape or town as it looked in the early part of the 20th Century and then capture it as it looks today.
Each week we will collect the metadata (descriptive information) and the thumbnail images from our groups and load them into PictureAustralia, enhancing its value to researchers and the general public. The first load will occur the week following Australia Day 2006.