With so many online casinos to choose from the competition between them to get your business is quite fierce so apart from heavy advertising which some casinos do or sponsorship deals to get their name in front of you (for example the ongoing Ladbrokes World Darts Championship), one of the most popular forms of enticement is the casino bonus. The casino bonus takes several different forms but the most popular for new players is the matching deposit bonus. In this form of online casino bonus the casino will match your initial deposit to the tune of 50% or 100% and sometimes this will even extend to your second or even third deposit although there will be a time limit for all three deposits to be made. These are great bonuses and will give you far more money to play with than you would otherwise have which means more enjoyment There is however always the small print attached to these casino bonuses which you should be aware of to avoid disappointment and misunderstanding and they are included in the terms and conditions which you should read. These generally do not make it difficult to receive the bonus but it can be difficult to withdraw the money. The online casinos will generally place what they call a play through requirement on either the bonus amount or sometimes both your initial deposit and your bonus amount. Play through requirements do vary from one online casino to another and obviously the lower the requirement the better it is for you as a player. Play through means the number of times that your bonus must be staked so a play through requirement of 20 times your bonus means that you must stake 20 times the value of the casino bonus received before you can make withdrawals. Be aware also that all online casinos will have restrictions on what games qualify and which do not; for example it is not unusual for roulette stakes not to qualify for the play through requirement or only for a small percentage such as 10%. Online casino bonuses are great but read the terms and conditions to avoid disappointment..