Mostly at the center of the screen. It didn't matter in the days of 640x480 and 14 inch screens, but it does today when 1280x1024 and 21 inch screens are common. Well, a writer writes all his life. An artist paints all his life. A singer sings all his life.
Some programmers give away their programs.
They don't charge anything. Well, both money and recognition are products of the human mind. Some value money, some recognition, and others both. When a programmer renounces authorship of his program and gives it away, he becomes truly superior. Extremely small particles.