Match / Signup Bonuses
Some casinos match your sign up deposit with a bonus. Some even go as high as paying a matched bonus of 400% of your deposit.
To receive these generous terms you are often required to play through the bonus amount many times. This prevents players obtaining a generous matched bonus and then promptly cashing out.
These bonuses are excellent value for you and give you gambling enjoyment at the expense of the casino.
Blogs On Gambling brings you a good selection of these match bonuses.