Here's what I found on the site:Bonus Overview
Within our new system, when you deposit to your account, your bonus is immediately applied to the "unqualified bonus" balance. Once you have used 95% of your cash
balance, your bonus money is made available to you.Bonus MoneyBingo Mania
currently offers a 150% Bonus on initial deposit and 50% Bonus on all other deposits. An initial deposit is the first deposit of funds made to a player's account. Existing account holders are not eligible. All Players referring new members are eligible for a 20% bonus on every deposit made by the new referred player up to 90 days.
All promotional bonuses are void if not claimed within 30 days of being issued. Bonuses are awarded in the form of "Bingo
Bucks." Bonus bucks are awarded to depositing players in order to enhance their deposits.
Funds won on a Bonus are not eligible for withdrawal until a deposit of equal or greater value has been made to the player