Many questions on Gaming SE can be answered by just posting a link.
As I just answered this question, someone else posted the same link but with no further explanation. Everybody knows that in a year or so this link might lead to a 404.
So it would be nice to encourage the user to summarize the concepts on the linked page. Probably a hint when adding links on answers or something similar.
What do you think about it?
In order to guard against misunderstandings: Copy&Paste of the linked (copyrighted) material is not a solution. But rephrasing of concepts/solutions would be nice.