I was pretty surprised to see that Hacker News changed the title of my post with no visual indication or editor's note.
I like HN, it's one of the few places we can read non-corporate blogs. But that seems to me like an odd editorial practice in absence of any indicator. The app(dot)net section was maybe 500 words of a 2,200 word piece.
Left: HN editorial change. Right: HN aggregator with original title