A writer needs to be write in many different ways. Web content, article writing, or whatever, needs to suit the style and informative nature of a given niche. For example, if you try to write about serious article about physics in a story-type of a format, you probably won't gain much of a following from those wanting your services (correct me if you think I'm wrong). And it might be a really good story!
I am a article writer for now, but I am developing my writing skills, so that I can focus on Copywriting.
I'd consider myself a article writer. I consider what I write for my blog informative articles rather than simply posts.
I'am an article writer and a video blogger. Even though Li Weng did not ask about video blogging, I mix the two.