Better yet, avoid narrative paragraphs whenever possible. Try using a bulleted list or a table instead. It's a lot easier on the eye. We would add several additional considerations. First, given that there are no column limitations as in journalism or book page limits, an author can choose to put up a virtually unlimited number of web pages.
Text takes up little computer hard drive space, unlike graphics and video.
2,000 page novels will be read, if captivating. Second, one's writing style should be suitable for both the material presented and the intended audience. If one is producing an on-line scholarly journal for an expert academic audience the text may read quite similar to the paper version. If however, the intent is to open up the field to lay audiences, major revisions may be required. Third, new media writing is still evolving.