Does not everyone classify their corals? You get a new SPS coral and want to know what the care requirements are. So you google it and look up say Acroporia and what it needs for light requirements, placement, flow and food. Guess what you just used classification of corals to find out the species requirements. Look on any website when looking for a coral and depending on what type of coral you want you can look under the classification to help you find what you are looking for.This hobby is based on taxonomic validity for proper identification, it just comes down to how strict you want to adhear to it.