https://www.tenders.gov.au/ has alot of useful information and an export data feed (https://www.tenders.gov.au/?event=public.reports.listCNWeeklyExport) but it isn't easily accessable and the licencing isn't very friendly. Only 500 records can be downloaded per search; this is about a quiet day's worth of data. This kind of information has been very useful in other mashups such as http://www.usaspending.gov/ and http://data.octo.dc.gov/
Voting on Ideas
Vote for your favorite ideas by clicking on the up arrow.To undo an upvote, simply click the arrow again. This second click removes your vote.