Abstract: A bicycle-mounted sign holder with interchangeable sign capability for the purpose of advertising goods and services as displayed on the sign. The sign holder includes a pole and a sign frame secured to an upper end of the pole. The lower end of the pole is mounted on the bicycle and has a length sufficient to elevate the sign frame to a height that is above the rider's head when the bicycle is being ridden. The frame is coupled to the pole with a pivoting device so that the frame can swivel around the pole as moved by the wind. A sign displaying advertising material is secured to the frame and is then broadcast over a given geographical area as the bicycle is ridden through the area.