Expand and Clean
Not only does this article need clean-up, it also needs expanding to include researchers who deal in other aspects, such as film-making.
Research is the search for knowledge, but does doing Research automatically make you a Researcher? I think to qualify the term, the fruits of your labour must be transferred in some form, be it patents, peer-reviewed publications, books or documentaries (to name a few). Gardening doesn't make you a Gardener, smoking a single cigarette doesn't make you a smoker.