1. You either didn't see my previous post or have no useful response.

2. Sorry, let me rephrase my point here. You can reuse code, but not all code. Any code you could reuse could also be re-used in another languages using tools like GWT, py2js, j2js, etc, mitigating server-side javascript's advantage here.

As for points 4 and 5, I couldn't care less whether you're interested or not. My point is that javascript has no unique advantage here over most other popular scripting languages, and you made an earlier comparison to Python, hence the Python example.