Okay, I get it now. I'm sure this was explained somewhere before, but it looks like after initial voting, the 1st, 2nd and 3rd place winners for each category are identified.
The first place winners from each category are up for best of show. After voting on that level, the first, second and third place winners are identified and win prizes. At this point, not only do we get to see the three prize winners, but also the first, second and third place winners in each category!
If we click over to the contest homepage and then click on a category, we can also see the fourth and fifth place photos and how many votes they got, and all the runner up pictures too (i.e., all the other photos submitted to that category) along with any captions.
I wish there could be a little prize for all the second and third place winners in each category, say a little microbadge or something. It would be nice.
Again, it was a wonderful event and I really enjoyed seeing all the pictures everyone submitted. Thanks
@dave for this and for all you and all the others do!