Show HN: Userscript to help navigate HN comments

I often get lost reading long comment threads on HN, and find myself scrolling up to a parent comment, scrolling back, and losing my place... This extension simply adds subtle 'parent' links to every comment, which display the content of the parent post when you hover over them.

No warranty, and i apologise if this ended up in the wrong place, hope someone enjoys the fruits of my evening's hacking.