Yes you can make money laying horses on Betfair but it is not as easy as you think many punters wander into this with the understanding you have typically N-1 runners in horse race on your side where N is the number of horses in the race and 1 is the horse you have layed to lose the race.

Betfair is a British gambling company founded in 2000. It operates the world's largest online betting exchange. Its product offering also includes sports betting, online casino, online poker, and online bingo.