Check out this tipping comp for the Aussie Open http://www.121s.com/viewtopic.php?t=2785
Prizes $US1000 free entry so it's worth a crack.
I personally think the first few rounds are going to be extremely tough to pick. It seems to me that the veteran players (or mature players) seem to do really well in Australia for some reason. It may be that many players come here to have fun and view it more as an extended holiday. I'm only speculating of course, but it's not uncommon for this to happen in other sports down under when people come to visit (e.g., The West Indies cricket team is a classic example).
Anyway, I have the inside lane being in Australia, so don't expect me to give out late injury tips