Over the last few years there have been many studies on the popularity of authoring techniques such as what HTML ids and classes are most common. The most recent study was done by Google. Their study on Web Authoring Statistics is quite interesting and shows many statistics for authoring behaviour in the following groups…

• Pages
• Elements
• Classes
• HTTP headers
• Page headers
• Metadata
• The body element
• Text elements
• Table elements
• Link relationships
• The a element
• The img element
• Scripting
• Editors