I am familiar with a previous matter on this aus-city forum relating to a copyright infringement which I will not comment on but aus-city won.

If you read below down the bottom David Cottle explains very clearly that nobody and in this case that includes the Police or this Department of Child Safety is allowed to copy an individuals posts, (that includes screen shots) whatsoever without permission of an aus-city forum Admin.
If you look at the link below it states very clearly
regarding How do I avoid becoming the subject of a complaint. Now read item 6 and 7
http://www.cmc.qld.gov.au/data/portal/00000005/content/39921001136957889067.pdf