In my opinion, we should try, for short answers, to contain content, with a link to the source (if applicable).
If a question is too broad, it should be split-up per world/level, for example (read: Where are all the star coins in New Super Mario Bros. Wii vs. Where are the star coins in level 1-1 in New Super Mario Bros. Wii, with a CW linking those together.)
Also, containing basic content versus only a link will prevent link-rot (links can rot, content won't)