I get two different pages at various times when I click my own sellathon link (I'm a subscriber).
One is the screen you guys are seeing, the other is like a "Hey, come join sellathon" ad page wherein nothing re: my auctions can be seen unless I log in.
I've NEVER seen a bidder's list (either logged in or not), though. That's definately disturbing...something like that, if it's true, would lose sellathon my business.
-Fox