This is a feature found on Apple Macintosh computers as part of the operating system. I took an article and performed a summarize and it made a line from the last post stand out. From there, I went back to the full article to do an excerpt post.
Can the use of the Summarize service be more automated? Thinking the answer is yes. Is it worth the time and effort to do so? Unknown. If the job to be done is big enough this will be worth exploring further.