If you haven't jumped on the TikTok bandwagon, you're one of the few, considering that the mega app now has a reported 150 million American users, and that number is growing. And those who get on TikTok can't seem to put it down, thanks to the app's innate ability to seemingly read its subscribers' minds. Its subtle understanding of a user's preferences has made it addictive, which begs the question: How is this app so apt at diving into its users' deepest desires?