A guide is something that fully explains what this is (Such as a class overall or a spec in-depth, a raid instance, an encounter (if very specific), battlegrounds and more.
Hints are small post-it-notes that explains nearly nothing and assume you have general knowledge of what you're doing already.
There's a huge difference between the two and I keep seeing more and more "hints" as the "1 2 ??? profit" in the guide forum.
They do not belong there. Please add another section called "Hints" (or whatever fits you) for "guides" like these.