I did back in 2005 when it was worth doing, they all have measures in place to not make it worth the effort any more.
And it's usually called Bonus Bragging.
For those of us who have only ever gone into a casino to eat free food what's this bonus bagging? I hope it's nothing like tea bagging, that wouldn't be nice.
I made a significant amount of money when I did this 6-7 years ago. The offers tended to fizzle out back then, is this still possible?
Sounds like a waste of time, match bet instead.
The general idea is that casinos pay out signup bonuses and you usually had to wager them 5 or so times over before you could widthdraw. Certain games such as blackjack allowed you to play a game with a tiny house edge thus limiting your loss whilst you wager 5x the bonus amount. You just had to play blackjack via a formula and you are pretty much guaranteed not to lose very much. A £500 bonus would become a £450 withdrawal.