PokerStars gives its new players a 100% match on their initial deposits, up to $600. The interesting thing about the bonus is that players can make 3 separate deposits within a 90 day period to take full advantage of it.
Only new players qualify for the sign-up bonus. After the deposit is made, the bonus money lands in the player’s bonus account. From there, it has to be redeemed through real money cash and tournament play.
VPPs need to be collected, a total of 17 of them for every bonus dollar. The bonus is released in $10 increments, which means you have to collect 170 VPPs for every bonus batch that hits your real money account.

The PokerStars sign-up bonus is valid for 90 days.