Map Data Online available as a web service for mashups

We recently did a mashup where we sourced data from our local GIS server, a client GIS server, and ArcGISOnline and presented data in a web application.
It would be wonderful to be able to get ABS Boundary data (or PSMA Data) available as a free online service that can be used in mash-ups.

I also think that this would make a great project that the taskforce could fund.