Marissa Mayer has been working diligently to revive the fortunes of Web firm Yahoo since taking the reins back in July 2012, though the enormity of the task means the challenge is far from over.

In Brave's case, it's the Answer With AI feature that can be disabled in Settings, and with DuckDuckGo, there's a button at the top-right for Duck AI, which you can also disable in Settings. Once ...