A good definition of the arts is given by the Free Dictionary as  "imaginative, creative, and nonscientific branches of knowledge considered collectively, esp. as studied academically."

Arts category contains English language sites about art, or "the use of skill and imagination in the creation of aesthetic objects, environments, or experiences that can be shared with others." This includes the "liberal arts," concerned with skill of expression in language, speech, and reasoning, and the "fine arts," concerned with affecting aesthetics directly, and especially affecting the sense of beauty.

• Sites primarily about arts or artists (actors, painters, musicians, etc.) should be listed in the appropriate Arts category.
• Sites primarily devoted to selling products, even artwork or artists'' products, should be listed in Shopping.
• Businesses that serve the arts communities without directly creating art themselves - agents, casting companies, financiers - are listed under the appropriate category of Business.
• Sites about art that is produced or viewed through computers are listed under Arts while sites about computer tools or data formats that can be used either for art or non-artistic work should be listed under Computers.
• Activities that entertain their participants more than the audience belong in Recreation.