Often, preserving privacy means sacrificing utility. But a Sudo gives your user complete control over their online identity without any loss of utility. As an example, if a user is researching a sensitive medical condition they may want to remain anonymous or conceal this from relatives. However, they still want to get the benefits of online tracking. These include the obvious ones, such as preserving their search history and seeing relevant new results, marking favorites, and setting bookmarks. But there are other benefits, like receiving discount coupons, joining currated email subscriptions, or getting referred to a specialist hospital.