The American Shorthorn Association's (ASA) commercial Internet presence has been updated as a resource for Shorthorn enthusiasts, and the general beef industry. Heterosis.com provides details on all Shorthorn commercial and genetics programs, such as Durham Natural Gold Beef, Durham Red and the Proof Positive Feedlot program, as well as information on ASA's genetic evaluation, breed averages and trends, pedigrees, EPDs and ultrasound collection. There's also a free listing service for Shorthorn feeder cattle and commercial females, a discussion board, article library and Beef Improvement Federation guidelines and fact sheets.