http://www.matchedbettingbible.co.uk/go/pa to learn more about matched betting
Learn how a betting exchange works.
Also check out matched betting for a risk free way to make money:
My site with text wire up on exchanges.
With a lay bet you stand to win your stake and you stand to lose your liability. You take the role of the bookmaker. 😉 i.e if you lay £100 you will win £100 max.
More info and tips: www.matchedbettingbible.co.uk