20 GOTO 10 was an art gallery founded by Christopher Abad in San Francisco, California, United States. Its name is a reference to the traditional looping 'Hello world' program written by beginner programmers. It featured both traditional and "hacker" art, with an emphasis on technology as art, or exhibits which make the potentially criminal or unethical aspects of computer security accessible to the public. The gallery was located at 679 Geary St. in San Francisco, and was defunct at this location as of Summer 2012.