FAQ - Search Engine Optimization (SEO)
SEO Factors: Organized Content And Navigation
Rather than trying to include as much information as possible on a single page, it is often considered a better idea to break your content up into specific categories.
This allows you to tailor these specific pages to certain keywords, increasing keyword density and increasing the chances that one of your pages will be found based on its specific, relevant content, rather than having one large page with a long list of keywords attempting to cover a broad range of topics.
Pages with too much content typically cover a very broad range of information / topics and are difficult to pin down based on several relevant keywords.
This will infact dilute your web sites rankings for desired keywords.