Consumers using Global Electronic Commerce can make more informed buying decisions by consulting numerous online references and catalogues, comparison shopping and even testing products, such as software, without ever leaving the house. Because technology enables electronic cataloguing of volumes of online product and service information, consumers can specify preferences, leaving sellers to respond only to the particular criteria. In addition, Global Electronic Commerce increases consumer convenience because consumers can locate and purchase hard to find goods and services 24 hours a day, seven days a week.