Creativity and imagination is the main source of an Art and anything that has these factors can be considered as an Art. It is an individual who decides if it's as Art or not and not anyone else as far as I understood about Art after reading and researching about it.
Kant defines art as a kind of representation that is purposive in itself and, though without an end, nevertheless promotes the cultivation of the mental powers for sociable communication.” (Adajian, Thomas)
I like this definition of Art because of its focus on an individual's ability to think and communicate with the society.
"A work of art is the visual expression of an idea or experience, formed with skill, through the use of a medium " (Frank, Patrick)
"Art is created when an artist creates a beautiful object, or produces a stimulating experience that is considered by his audience to have artistic merit." (Art Definition, Meaning: How to Define "Fine Arts)
Everything I experience may be an Art for me - the shoes that I wear, the car that I drive & the house that I live in. I think everything that a human mind can create and perceive is all - one or the other forms of Art.
One of the forms of Art, so called the Visual Arts is more likely useful in communication, in my opinion. For instance, if I want to share my achievements with other people then I might visually put it in the forms of paintings, photograph, dwelling or poster and wish other people understand it. Hence, visual Arts would help us communicate an individual's purpose with the other beings.
Adajian, Thomas. "The Definition of Art (Stanford Encyclopedia of Philosophy)." Stanford Encyclopedia of Philosophy. 23 Oct. 2007. Web. 04 June 2011. <http://plato.stanford.edu/entries/art- definition/>.
"Art Definition, Meaning: How to Define "Fine Arts", "Visual Arts", Aesthetics, Crafts: Classification Questions, History of Definitions." Art Encyclopedia: Visual Arts Guide To European, Irish, American Painting & Sculpture: Greatest Artists, Best Museums, History of Art Movements, Renaissance. Art Encyclopedia: 2011. Web. 04 June 2011. <http://www.visual-arts-cork.com/art- definition.htm>.
Frank, Patrick. Prebles' Artforms. Tenth ed. Upper Saddle River: Prentice Hall, 2011. Web. 4 June 2011