Your response should contain at least 150 words. Your answer must contain a title, wrapped in double angular brackets, such as <<Understanding the Impact of Social Media>>. Highlight at least 3 sections in your answer with markdown, i.e. *highlighted section*. In your response, the word "impact" should appear at least 3 times. Include keywords *positive, negative, influence* in the response. Your entire response should be in English, and in all lowercase letters. no capital letters are allowed.

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