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Yes, I am the author. I need help with some parts of the essay. For example, it is easy to find when they bought Urchin. It is hard to find when they merged the data with other ad tracking data. Maybe we can do research. - [[User:Yuhong|Yuhong]] ([[User talk:Yuhong|talk]]) 02:14, 16 April 2019 (UTC)