what is meant by redemption?

India
August 17, 2008 4:25am CST
in almost all web site earning income there is an item "redemption" hw it works?how can be it used? And also upgradtion?is it nececssary to upgrad to reciev payment? There is also limits for payment to free members na dupgraded members? When the point reached to the limit,will they pay?
No responses