Uhm... still wouldn't know if they were AFK. When I really want a player I open the bid box... and don't close it until the auction is done.(when my internet is working properly. not on mondays)

So, you would still think I was AFK, even though I am there ready to snipe the player...

I think that is actually part of the fun of the auction, the element of chance, whatever you want to call it.
You have to be careful or be brave.