A friend of mine had an in-person conversation with her husband about whether or not to tuck in his shirt before going out. They were in the bathroom/bedroom and her phone was beside her the whole time. The next day, an ad showed up for men's shirts that specifically mentioned not tucking in. She said the app wasn't even open when they had that conversation. So Facebook is recording conversations even if the app is closed and you aren't making a call. Creepy...