Auction.com, how can the site automatically bid against me??

[Kris Haskins]

Ok, so auction.com says- and I quote.....  "ADC may counter bid on behalf of Seller on any Property up to the amount of the Reserve Price"  

   How is that legal, isn't that like a realtor saying they have other offers when they really don't have any.  I'm curious to know how can this site make a "fake" bid just to push the price up on a house.   They start the opening bid super low, then set a reserve super high in our area, Hampton Roads....   This seems illegal to me.  Please tell me if I'm wrong about this....?????