Facebook often copies interesting features from their rivals. Previously Facebook added to Messenger functions which were similar to Stories or face filters from Snapchat, and now it looks that Facebook will test new function, which looks quite the same as Streaks on Snapchat.
After two days of our increased activity with other person we will begin "Streak". What does it mean? Near the profile picture of our friend will be situated special emoji which will inform us that we talk a lot with this friend, and if we would like to keep this series we just have to send one message in this conversation per day to continue it. Currently this function is in beta tests, and only few users is testing this option. We will see if this option will receive good reviews.