Superstock, Inc., is an online, Internet-based retailer in the custom framed art and wall decor market. The company allows catalogers, retailers, and distributors to offer custom framed art to online customers through its Web site custom frame shop. Superstock was founded in 1998 and is based in Jacksonville, Fla. Superstock is a subsidiary of a21, Inc., a leading online digital content marketplace for the professional creative community. Through SuperStock, Ingram Publishing, and ArtSelect, a21 delivers quality images and exceptional customer service. a21 and its companies, with offices in New York, Florida, Iowa, and the United Kingdom, provide a viable choice to photographers, artists, photography agencies and other customers in the stock image, art and wall d cor industries.