I saw yahoo ads on http://www.skylinesaustralia.com/forums/home.html see the ads at bottom. See the link at the bottom of the ad unit Ads by Yahoo! http://info.yahoo.com/services/au/yahoo/ads/details.html regards
The ads are so unrelated. I am only seeing banner ads not contextual ads so I think its something else.
Maybe only for bigger publishers http://searchmarketing.yahoo.com/en_AU/pn/cp.php Even here http://searchmarketing.yahoo.com/en_AU/pn/int.php
they didn't launch it for the publishers worldwide at the right time, and they are already waiting for a slow death.
No, still not available in Australia. I suspect that someone involved with that forum is based in the US.