To novices and the weak of heart? Sure. I've yet to
    find a greater source of technical depth regarding
    JavaScript.

I agree with you about the usefulness of comp.lang.javascript, but I disagree regarding David Mark's contribution to education. I had to killfile him years ago, mostly due to his use of sockpuppets. Here are just two of his Reddit sockpuppets that I made note of years ago when I still visited Proggit:

http://www.reddit.com/user/DeathFromAbove2

http://www.reddit.com/user/joesixpack3