The traditional newspaper format is the most efficient way to present information on the Web.
You might or might not have heard the name “inverted pyramid,” but you know the structure. Information on the newspaper’s front page is more compelling than what you find on the “run-over” page, where the story continues inside. That is because you are moving progressively toward less important information. This organizational structure is called the inverted pyramid because the pyramid represents the descending importance of the information. The most significant comes first and the least appears last.
Most feature stories are told in a different format, and they are presented differently online than they are on a printed page. But people generally do not go online to read stories anyway; they go in search of information that they want to absorb quickly and move on, and the most-to-least important structure is the most efficient way to deliver it.
The opening paragraph (the first two sentences), should contain the essential facts or the main point of the message, and then you develop that idea in the subsequent paragraphs.
Also, make Web pages self-contained whenever possible to save readers from clicking to another page to finish the piece. A great site to see for tight writing is the Mayo Clinic site.