Over at Anime & Manga, a lot of users come with images of anime fan art, cosplays, gifs, etc and ask who the character is, or which show they are from.
The only problem with these questions is that we get a lot of badly researched questions. Specifically, users could put their images into Google Image Search or similar reverse image search engines and get their answer quickly.
For example, this id request can be easily discovered with a quick search
What I propose is that when a low-rep user is writing one of these questions (tagged "identification-request" & containing an image), a message advising users of these identification methods could be shown.
We have a meta question on our site about how users can go about finding image sources themselves.
I believe this measure could help question quality significantly.