Layers mate.
As in, people that lay odds.
Oh lordy.
Right. I'm on the exchange right. My selection is at 10.0
So I back it
Wow! something happens (like, I dunno, a local rag running a 'it's happening' story), it tumbles down to 1.7. I lay it off here to cover my initial stake, maybe a bit more. I literally cannot lose money on either outcome, but I may end up with different possible profit.
Do you know how much influence
@The Esk could have on that market with a single 'it's 100% happening' post? Masses. Everything available would get hoovered up.
Please mate. Stop.