A couple of notes:<p>"Google has begun making public the details concerning their Portable Native Client (PNaCl) implementation."<p>To be completely fair, PNaCl is part of Chromium, and hence an open source project from the start. The code is freely available for anyone to see, check out and build, and has always been.<p>"Portable Native Client comes down to compiling Google Native Client applications to a subset of LLVM bitcode that can then basically run anywhere that Native Client is supported. "<p>I suppose Michael Larabel meant to say "compiling C and C++ applications" instead of "Google Native Client applications" here.