This is huge for many of us working with WebRTC for video (or audio), because the only way for Safari users to have the same experience as other browsers was through a plugin.

By closing this gap, you can have the same experience for 99% of desktop users. iOS will stil require a native app (I really, really, really hope they will implement it there next).

The use case I'm working with is embedding video as part of live support for retail, and we're looking at doing more than that.

Why does it matter: my personal belief is that WebRTC might be an important enabling technology for VR or AR-based shopping experiences (We actually applied to Y Combinator with that, but got rejected).