The article discusses a new policy aimed at preventing 'back button hijacking', a practice where websites manipulate the browser's history to redirect users to unwanted pages or ads. Commenters reveal that this issue has been frustrating users for a long time and has been exploited by spammers. The policy aims to demote websites that engage in this practice in search results. The discussion focuses on the implications of this policy and the legitimacy of modifying browser history for various purposes.