Sticks the first line of all comments in the visible comment tree to the top of the screen so you always know where exactly you are. See the screenshots for a better understanding. Also adds the ability to expand/collapse a comment by clicking anywhere on it.
< Feedback op Hacker News Contextual Comments (sticky tree)
This is so awesome. It has always been a pain in the ass to find the parent comment for more context, this script solves the problem.