What is your online business? How do you make your money?

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Basically what the title says. If you would, please tell me and everyone else that would read this how you make your money with your online business or how ever you make it. If you have any advice to give on which direction to take in making money, please list it here. If you have failed in some way please list it here. I just want to know a general way of how you make an income, whether the income be 10-1000$. Just any kind of infomation would help out. Thanks.