Credit generators are fake programs. Anyone who says they work are either dumb or have something to gain from telling other people they do. If the generator ever tells you to put in your account information, you can guarantee it's fake and will try to steal your account. Most of them work by asking you for your account name and password and then when you press the button, it sends your account info to an email account where the person will use it to steal your account or steal your credits. Others are just fake programs that people use to make money off downloads or surveys.
Which brings me to my next statement: We don't allow survey downloads here. You're welcome to make money off your download with a service like adf.ly or something but the download link must not ask for any personal info or make the user jump through hoops or fill anything out or ask them to install anything.