vitalik.eth: donated 128 ETH each to Session and Simplex for metadata privacy

Vitalik Buterin says he donated 128 ETH each to Session and Simplex, two messaging apps he describes as pushing permissionless account creation and metadata privacy forward. He urges readers to download and use both apps, while noting that neither is yet optimal in user experience or security. The post says strong metadata privacy requires decentralization, which is hard, and that multi-device support and Sybil or DoS resistance add further difficulty.