Hi all,
FYI: We have opened a dedicated forum for Vac. The idea to make it a public place for discussion related to Vac, similar to how libp2p have a separate forum from IPFS and Filecoin.
I’ve seeded the forum with discussion topics of existing research posts. If you are interested, please sign up and be the second first person in the world to post there! 
Just hot off the press we have a new update on the feasibility of using Semaphore for rate limiting using zkSNARKs. If you are interested in zero knowledge proofs, performance, spam protection, Whisper, technical/social blockers for new technology, or just random esoteric stuff, check it out! Discussion thread can be found here.
https://vac.dev/feasibility-semaphore-rate-limiting-zksnarks