Free bets, promos, deposit bonus was already mentioned in the other thread I think. I will give you an example, how you could cheat the Multimaster Promo with heavy multi-accounting:


Source: https://sportsbet.io/promotions/weekend-multi-master

You have 15³ = 3375 different combinations, minimum stake 0.1 mBTC, so total stake 337.5 mBTC. But you will win 3000 mBTC every weekend (if no one else does the same)

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Take 100% first deposit bonus. You deposit 100,- and get 100,- on top. You do this with multiple accounts and always place opposite bets on these accounts. The one account plays "over", the other "under". One account will be empty, but the other has double the amount. Onto the next account. Rinse and repeat, until rollover requirement is done and you can withdraw more than you deposited into all these accounts.

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Some bookies don't want you at their site no more. My account at Sportsbet is limited to ridiculously low amounts, I have no price boost anymore, even my max bet button is gone. They want to get rid of me and achieve that by making my account unusable. If multi-accounting was allowed, they couldn't get rid of me (or not that easy), since I could just open new accounts all the time. This is industry standard and they have all the right to do it. I am ok with it, though it's a bit annoying always I must confess, but nothing I can do.