I'd be a lot happier with betfair if you could, say right click on a price, then see a list (if more than one bid at that price ) of the layer's accumulated liabilities on that runner. Have a clearer picture then of just what they stand to lose. Won't happen if betfair has anything to do with it. For example, you might see $67 at 25-1 being offered, then find the layer has already stood it to lose 10 grand and is drip feeding so as not to alarm backers.