Netflix has already begun using two of the three extensions -- the exception is "WebCrypto," which handles JavaScript encryption -- in Google's Chrome OS on Samsung's Chromebook. Once WebCrypto is supported by the Chrome browser -- the foundation of Chrome OS -- Netflix will start testing the Silverlight substitute on Windows and OS X.

Oh thank goodness. Silverlight is as much of an abomination as Flash.

JavaScript / WebCrypto for the win!

Funny.  Just the other day I was hovering over the uninstall trying to figure out if I still needed it.  Netflix has been threatening to dump Silverlight for ages!