It is very similar to companies like Google and other internet companies. When you go and search on Google you don't pay for that. But sometimes you click on an advert and Google makes money on that.
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The days aren't discarded or collected, they are beesthat burned with sweetness or maddenedthe sting: the struggle continues, the journeys go and come between honey and pain. No, the net of years doesn't unweave: there is no net. They don't fall drop by drop from a river: there is no river. Sleep doesn't divide life into halves, or action, or silence, or honor: life is like a stone, a single motion, a lonesome bonfire reflected on the leaves, an arrow, only one, slow or swift, a metalthat...
Pablo Neruda