thats caused by amazon mailing random people that bought the article when a question is asked with a message like "xyz asked a question to << article >> you bo

thats caused by amazon mailing random people that bought the article when a question is asked with a message like "xyz asked a question to << article >> you bought some time ago; << question >>" these people use the reply function of their email client and send back "i dont know" ... which makes amazon append this answer to the question.