I make a simple program. The program is simple. Basically add friends and confirm friends. Allow people to quickly increase their friend to 5k. Then I will make another simple program. Basically spam your friends with texts. I can set this up as service. Or I can just let users run it by themselves. NOTE: I am NOT selling the program yet. How much do you think I should charge for this? If it's a service? How much? If it's a program, how much should I charge per month? Should I charge per account? 5k friends, .5 cents each means $25 to make your facebook account full of friend? Is that a reasonable fee? Basically I would need a server that track down people's credit. Every time an act is done, I would deduct money from their balance. Would that be a good idea? I am thinking of selling stuffs in apple playstore too. How do people make money here?