YogurtEart has released a new update to his awesome nested comments script. This is an optional Firefox + Greasemonkey add-on that makes it so comments that reply to one another appear below each other and indented. Personally, I find this makes following the various sub-conversations within a thread easier. Supports Firefox with GreaseMonkey and Opera with Opera UserJS. The new version fixes the problem of the commenter buttons getting smooshed next to each other within a nest.
YogurtEarl’s GreaseMonkey scripts [YogurtEarl]