Betfair - Betting Robots Anyone heard of this or using it?

I keep hearing about Betfair and automated robots for example Auto Betting Monster? Rebel Betting?  Is there any validity to these types of systems?  It seems to easy therefore I don't believe it to be true.

Just looking for opinions or thoughts on this.

If you can get away with it, it's free money.

What do you mean if you can get away with it?  Have you or do you know anyone using any of these systems and if so which would you recommend?

Thanks for your input dj

All the credible sites know when you're using one and will kick you out very quickly... If you find a site that lets you snipe prices, then by all means, snipe while you can.

Any program will do, they're all very similar. You just set prices and the program puts the bets in for you at those prices giving you a middle.