TECH TIP: Tik-Tok is top earner among apps

As many of us celebrate Christmas, there is one company that's celebrating a bit more. Tik-Tok has broken records, becoming the first non-game app to generate $10 billion in spending... and may soon become the highest-earning app ever. In this edition of our Tech Tip segment, we'll tell you more about how the video-sharing platform has de-throned others.