I think one of the qualities needed for a good history website is to categorize your information in easy to find categories and sub-categories. This makes the information easier to find for new and recurring users, giving an ease of access to search for key terms in ways much easier before these sources were moved onto an online format. This also helps when your information is searched for using an online search engine, as the information someone is looking for is that much easier to find. A second quality is to know who your information is for, which helps you in presentation. Whether its for casual observers, or for academics searching for specific material, knowing who is searching for your content can affect the format, vocabulary used, as well as sourcing materials.