While not a money-maker, the fact that the tbh app attracted such a youthful audience is likely one reason Facebook fb was interested.
Indeed, over the last few weeks, more than 5 million people have downloaded tbh - and sent over 1 billion messages - according to internal data.
The tbh app is available only in 13 USA states at the moment, including Alaska and Hawaii.
The free app presents users with multiple-choice questions where a random four friends from their contacts are the answers to complimentary questions like "Could win an Olympic gold medal for their eyeliner game". We could even see parts of tbh's feature implemented in the main Facebook app sometime in the future.More news: Car Bomb Kills Least 7 in Mogadishu
Like other messaging apps such as Yik Yak, Sarahah and Secret, tbh's users can interact with each other anonymously. The questions cover such things as notes of affection ("I will marry them"), straightforward compliments ("Freckles on fleek"), endorsements and sarcasm ("Would drive to your house and wake you up to tell you who finally texted back").
Techcrunch reported that Facebook paid less than $100 million for the acquisition and the deal will not require any regulatory approval. "Most of all, we were compelled by the ways they could help us realize our vision and bring it to more people".
Furthermore, a statement given by Facebook said: "tbh and Facebook share a common goal of building community and enabling people to share in ways that bring us closer together".
Perhaps most clearly, TBH is yet another channel where Facebook can command the time and attention of young people.
It's aimed to improve the mental health of teens, and the people behind it - Nikita Bier, Erik Hazzard, Kyle Zaragoza, and Nicolas Ducdodon - say that the next milestone for the internet age is "meeting people's emotional needs".