Art is the expression of a person's emotion through the medium that person chooses. It may be through music, literature, photography, oil in the canvass, or other means. The medium is only the artist's instrument, which allows him or her to share his creative thoughts with others.
Technology has provided us with more tools to express ourselves. I have always been a visual person, and most of the art that I appreciate is visual. Most of the excellent artists that I know can create works of art in whatever medium they provide.
It doesn't matter if they do sketches or work in photoshop; most of their work still exists since they have the most critical aspect of art: creativity. In recent years, digital art has been growing exponentially. I've grown fond of this form of art due to the effect it produces. Digital art produces surreal images, which is unique to this medium. Art made in this medium is also getting more exposure, making it a great way to market the artist's work. Although digital art is abundant on the net, great works of art that stand out among the rest are still rare.