I was just wondering, how could you figure out that you are in the supplemental?
I found for this domain privatefleet.com.au, 922 pages being indexed, which 726 of them are in the supplemental index.
There are many reasons that you can be in the supplemental index. That requires an investigation and then planning how to deal with those issues.
THAT HURTS!
Read here why:
http://www.webproworld.com/340560-post25.html