FB is definitely monitoring Messenger. I have a fake FB account I use just to chat with my daughter on Messenger. I don't use the account for anything else. I w

FB is definitely monitoring Messenger. I have a fake FB account I use just to chat with my daughter on Messenger. I don't use the account for anything else. I was chatting (text only, no audio/video) on Messenger via the web client on facebook.com and on this occasion, we had a conversation on a very particular subject. The next day day inundated with group recommendations specific to this very particular conversation topic.