How should we tag questions about key bindings?
Right now we have a keymap tag. I'm wondering if we should use that for all questions of the form “how do I bind a key (or mouse event?) to this action”, or if we should use keymap for questions about manipulating keymaps as Lisp objects and key-bindings (like the manual chapter) for the general concept of binding a key (or key sequence or other input events) to an action.
I think for the sake of simplicity we should try to keep only one tag (and probably aliases) for those two aspects.
I might be wrong, but I would expect questions specifically about keymaps to be mostly about what keymaps are active at any given time and in what order they are searched. Which would indirectly be a question about where to define a keybinding, and how to make sure it's visible.
key-bindings is probably the one to keep. That is the tag used on Stack Overflow.