I was scrolling through the main page and noticed a post with significantly more views than all the others around it (this was the question: "What causes jitter?" from October '12). It took me a minute to realize that the question was from 3 years ago, and was bumped because a user (helpfully) edited one of the answers to fix a broken link.
Why would an edit like this on a post from over 3 years ago be bumped back up to the main feed? Is seeing when a question or answer is edited useful for anyone? I've nearly accidentally commented on 2+ year old questions because I thought they were recent - in most forums this is bad practice. I'm new to SE so I'm also curious to know the opinion of it here.