I was trying to buy few PBN domains from godaddy auctions and today was my first day. I kept two domains in my watchlist and waited for the last minute. But when ever I submit a new bid, an another automatic bid is placed $5 above the current bid. This happens in like within 1 second of my bid. Is this natural? Who would be behind this? I don't think I could win an auction if this is how it works! Please help.