This is not a server side DOM. It's an rpc system that acts like a jquery remote control.
That's an awesome summary - they should use it on the site.
Yeah. You just summed up in 2 sentences what I couldn't figure out from the entire readme!
tmpvar (jsdom author) has worked really hard on jsdom. turns out implementing DOM levels 1, 2 and 3 in pure JS is a hard problem. patches welcome, buddy!