Matched betting (also known as back or lay bet matching, or doublebetting) is a betting technique used by individuals to profit from the freebets and incentives offered by bookmakers. It is generally considered risk-free as it is based on the application of a mathematical equation rather than chance.
From The Guardian:
“There is an old proverb that says: “In a bet there is a fool and a thief”, and I’m not inclined to disagree. Could I really sit in front of my screen and make money from the bookies for nothing?
The answer, to my surprise, was yes. Over the past month I have researched and used every decent online free bet introductory offer from a bookie. I’ve taken up 31 offers so far – and I’ve made in the region of £770.”
From the Lad Bible:
“Meet The Lad Who Earns So Much Gambling He Has Bought His Mum An Aston Martin And Gives £1000 To Charity Every Month”
Note that this lad (Andrew) is part of the Profit Maximiser Facebook group