We have recently seen a significant number of questions that contain significant quotes from external sources and often very little other content. Some of these were mentioned a while ago and it wasn't clear that any action was warranted. However the overall volume is now at a level that we as moderators feel is not good for the site’s signal/noise ratio. After all, the goal of Stack Exchange is to build a high-quality question and answer library.
We already have guidelines for referencing in answers, but none for questions. As a community, what do we think would make these questions asking for explanations of external sources appropriate for the site?