How does mylot work?

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Well,this question was inside me for a very long time. How does mylot work?I am not talking how earnings are calculated. I want to know,how they earn money,so that they give us approximately 1 cent per post. So,I want to know whats their source of income? I think its improbable to earn through ads as only a single e bay ad is there in mylot. Anybody who knows please tell me. Thank you. Have a nice day.