[Aachen]

Because of people like you, we'd at least find out soon if someone does hack Facebook and starts tapping some percentage of conversations. It's like people that read terms of services, or use custom email addresses per service to learn of breaches before the company even knows it themselves. Keep it up :)

For me, I also just like the idea of not having to trust the servers. Probably is fine, like with IRC and MSN and old unencrypted WhatsApp and Facebook's homegrown chat (etc.) I don't think there have been major breaches either. Doesn't mean it's not nice to have better options and exercise them, at least in my opinion. (Not that I use WhatsApp, but I casually apply this principle on Signal/Threema/Wire, just whenever I meet someone irl whose key changed.)

I wonder if Facebook keeps stats on how many people do the key verification. It would be such a shame if the servers knew whom to mitm and who not.