The Signal messenger and protocol.

Anybody have any experience with mobilecoin? What is the use case for it? Seems kind of pointless and a lot more tedious than just a bank transfer. Why does signal include crypto nonsense in their app (I like crypto, but just can't see any reason why it should be integrated in the app). I'm sad that signal does not have support for 3rd party open source clients that could remove such features. Why not add support for monero instead?