As aquarists, we have experienced around 20 years of success with keeping some corals alive, 10-15 years of success keeping almost all zooxanthellate corals alive, and only limited success with most of the azooxanthellate species. Certainly, the prolific growth of Aiptasia sp. anemones gave some clue that "farming" cnidarians was possible. In 1999, I wrote a paper (Borneman and Lowrie 1999) for which a friend of mine, Deborah Lang, did some serious legwork in helping me determine all the species of corals that were being propagated at that time (with some obviously questionable species that are difficult to identify). We were able to list some 400 species as available, although most were Acropora species and soft corals. Over the years, cultured corals have been made available to the hobby from mariculture operations, aquaculture facilities, and local sources (aquarium clubs, local trading, etc.). Entire businesses are now devoted solely to the propagation of corals, books have been written on the subject, and now some websites even offer "propagation tools," such as forceps, snippers, glues and mounting materials. Frags.org, a relatively new website and concept, is a loosely formed organization of some 250+ private individuals and businesses who offer cultured corals for sale or trade. Organizations like this are truly remarkable, having stemmed from earlier efforts such as the "League of Coral Farmers." Some coral farms, such as Tropicorium, Inc. have been around longer than many aquarists have kept corals, and the pioneering propagation work by Dick Perrin (and son) are models of the industry's potential.