Encrypted messaging, like @signalapp, is critical for preserving our digital privacy. Two important next steps for the space are (i) permissionless account creation and (ii) metadata privacy. @session_app and @SimpleXChat are two messaging apps pushing these directions forward. For this reason I've donated 128 ETH to each. Addresses available on their websites if you wish to follow on: https://getsession.org/ https://simplex.chat/ But also, actually download and use them! Neither of the two are perfect pieces of software, they have a way to go to get to truly optimal user experience and security. Strong metadata privacy requires decentralization, decentralization is hard, users expecting multi-device support makes everything harder. Sybil / DoS resistance, both in the message routing network and on the user side (without forcing phone number dependence) adds further difficulty. These problems need more eyes on them. I wish all teams working on these important problems best of luck.(vitalik.eth)