That catch is that you have to play a required number of raked
hands to unlock the bonus. They don't just give you the bonus money right away.
Here's the info for earning deposit bonuses from Full Tilt (pulled from their website):
100% Deposit Bonus
Get a 100% Deposit Bonus Just For Signing Up - Up to $600
full tilt poker is pleased to continue offering deposit bonuses to new players. New sign-ups will receive a 100% matching bonus up to $600 on your initial deposit to Full Tilt Poker.
Here's how!
For each dollar raked from a pot, every player who was dealt cards for that hand will earn one point. You can earn partial points if less than one dollar is raked, and you can earn up to three points per hand.
Each point is worth $.06, so you can earn up to $18 per hundred hands.
For every dollar paid in tournament or Sit 'N' Go fees, you will receive 7 Full Tilt Points. There is no cap on the number of points you can receive.
The bonus amount will be automatically credited to your Bonus Account where it will be held and released to your cash account in increments of 10% of your initial deposit, or $20, whichever you earn first. So if you do a one-time deposit of $100, each $10 (10%) earned will be instantly released into your account. Deposit the full $600 and your account will get credited for each $20 of bonus earned. At three points per hand, each $20 increment can be earned in fewer than two hours of play at only one table.
You can see your cash total and bonus cash amounts in the Cashier window. You will continue to collect cash until you have received 100% of your bonus money. You have 120 days to earn your deposit bonus.
This offer is available to players making their FIRST deposit at Full Tilt Poker.
See you at the tables!
Team Full Tilt
I'm sure it's the same for their reload bonus.