As mentioned previously, I've moved to working fulltime on Emscripten now. So Emscripten-related blogposts will now be on my other blog. (You can also follow me on twitter.)
I'll use this blog for Syntensity-specific stuff, that is, about porting Sauerbraten and/or Syntensity which is based on it to the web. I have not had any progress to report on that recently, since I am completely blocked on OpenGL issues: I can compile the C++ to JS, but I can't convert the OpenGL code to WebGL. I've asked around for help but so far no luck, hopefully it will happen though.