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Do they not use your conversations for targeted ads? This is news to me, and surprising.

While anything's possible, it would be pretty shocking if Facebook figured out how to, on iOS (I can't speak for Android):

* Record audio if the app's killed completely

* Record audio with microphone permission disabled

* etc.

All of which have been claimed.

The far more likely scenario is that we're much more predictable than we think. Remember the target controversy when they figured out a teenage girl was pregnant before she had told her parents [1]? That happened in 2012. Imagine how much more advanced things have become since then.

1: https://www.forbes.com/sites/kashmirhill/2012/02/16/how-targ...

I was talking about the messenger texting app

I don't know why this got downvoted, while the question "does FB listen in on you" may not have a definitive answer, the answer to the question "does FB messenger look at your conversation text" is "yes": http://time.com/money/5227844/facebook-reviews-private-messa...

Does it use your private messages for advertising? It seems like "no" for now, but nothing is stopping them.

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