>Automatically scrollify long posts (and also increase the height of the scroll box from what it currently is cuz it's way too short)
use something like

blockquote.comment {
  max-height: 400px; /*or whatever*/
  overflow-y: auto;
}

in the CSS

this should degrade gracefully on old-ass browsers except maybe FF before 3.5 (which implemented max-height before overflow-y unlike everyone else) if that matters