No offense, but you've obviously not even given a cursory glance at the link, yet pretended to do so by calling it "neat" and immediately promoted your own unrelated link. Please don't do this.
There actually was a similar tool to this on the front page of HN yesterday - I think the commenter probably had multiple tabs open and accidentally added their comment to the wrong thread.
makmanalp|10 years ago
spb|10 years ago
spb|10 years ago
unknown|10 years ago
[deleted]