While I was happy for Australia when they came back in such dramatic style, and would love to see them go further, you have to remember that the tournament has just started. Many teams are still finding their feet, and it can only get tougher, even if you do get out of the group stages.
I have watched every game so far, and I think there will be quite a few surprises this time. I believe that some teams that have under-performed at previous world cups may just come good this time. Unfortunately, I don't think my team (England) will be one of them, although it would be nice.
Good Luck Australia!!