Why do online casinos offer such high bonuses?

CasinoEuro gives you a 100% bonus on your first casino deposit up to €100. This offer is available on your first casino deposit, and valid for 100% of any deposit value up to €100 for a maximum of a €100 WELCOME BONUS! CasinoEuro is NOW giving to all players registred via this pages bonus up to €110! So go ahead, click at the link and sign to CasinoEuro now!

Monthly Bonus! After the first month has passed since making your very first deposit at CasinoEuro, you will be eligible to claim the Monthly Bonus for your first deposit during the first 10 days of every single month. For example, if you made your first deposit at any time in January, you would be able to claim the Monthly Bonus for your first deposit made in February. You will then be eligible to claim the Monthly Bonus for your first deposit done in the first 10 days of every month.
The monthly bonus available is 30% up to €30. For example, if your first deposit of the month is for €100 or more you would receive a €30 bonus and start your play with €130. The bonus will be credited automatically as soon as you have made your qualifying deposit.

Once a day, a "Winner of the day" shall be selected at random from all registered bet-at-home.com users. In case this player logs onto his account before 11.59pm (GMT +1) of that same day, his betting account shall be credited with the actual winnings. In case the user does not log on, the actual winnings shall be transfered to the jackpot and the new winnings shall be given away the next day. The winner of the day shall receive a message that he is the winner of the day wen he logs on.