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I have a technical question: I just noticed that there can express gratitude. How's that? I thought that pressing "thank you" to express gratitude, but their numbers do not match. What else needs to be done for "thank you"?

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Evidently, click on "add a review, and there is something positive to choose?

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Ie "disapprove". This is the gratitude?

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No answer ... So, perhaps - "Thank you", this is the gratitude, and the line - number of "Thank you" party - this is how many times the participant said, "Thank you"?