This is good stuff. As I'm working on my game for github's game off, I was thinking about writing something similar. It doesn't bother me that's it's V8-centric, because devs are going to write about what they know the best. My article probably would have been SpiderMonkey focused.

Not sure I'll write it anymore though, this seems to have most of what I was going to say!

EDIT: After reading the article in more details, there are a few things I think it misses. My focus is more on games though. I still might write another article.