Lately, I've found myself trawling the [story-identification] posts fairly often, and a recurring problem is users who post answers that consist of a book title, occasionally with a bare link to Wikipedia or Amazon. I've been taking those entries and editing in a brief description, sometimes just from the site that they linked. Is this useful? Is it encouraging overly brief answers in hopes of answering "first" that then have to be cleaned up by providing actual detail?
I suppose that, as much as anything, the fact that there's usually a "Can you explain your answer?" comment on these posts to the original author. If the person in that comment didn't feel it was useful to visit the linked site and post the summary, am I presuming on my side?