Keybase just launched their teams feature (think encrypted Slack) and you can read more here: Keybase launches fully encrypted Slack-like communications tool -- and it's free • TechCrunch
The reason I am posting this is they have supported Zcash addresses (both taddr and zaddr) in Keybase profiles for some time. Here’s their rationale for choosing ZEC over other coins: Keybase chooses Zcash
Anyway, given this well-polished product, it should mean more exposure for Zcash in general which is a good thing.