This has the potential to be really annoying.
Facebook angered a lot of people a few years ago when it separated its Messenger app away from its actual Facebook app and this newest addition might get just as much grief.
The social network giant is going to introduce ads into its Messenger app which is used by around 1.2 billion monthly users.
When you click on the app and you are brought to the home page of Facebook Messenger, ads will be displayed and if the advert is clicked on, it will direct the user to the advertiser's website.
According to Fox Business, the new project by Facebook was tested out in Australia and Thailand and it looks like they will try and add this feature across the board with Instagram and WhatsApp also.
WhatsApp is completely ad-free at the moment but if this proves to be a success, that is something that could change rapidly.
Users will have the option to hide specific ads for a short space of time if they wish but they will not be able to stop them completely.
They will roll out the new project slowly and carefully to Messenger users in the same way Instagram introduced the initiative back in 2013.
The introduction of ads in Messenger is being implemented because Facebook believes that revenue growth will slow down in the coming years and they hope that this will help boost revenue again.