Daniel Posh from Addepar did a really good job evangelizing this - at least to me - still pretty niche topic. Very entertaining and approachable talk showing the current state of web client-based cryptography. It's actually more advanced than I thought, for example: at scramble.io the login encrypts the password in the browser, only sending the hash to the server.
Why, because it's ubiquitous, that's why.
(Slightly unrelated takeaway for me: node-webkit also sounds interesting for "native" desktop development.)
Update: the recording of this talk is available here: