Firms are interested in E-commerce because， quite simply， it can help to increase profits. （1）All the advantages of Ecommerce for business entities can be summed in one statement： E-commerce can increase sales and decrease costs. 
For Companies： （a） It increases profits. （b） It increases sales. （c） （2）Advertising can reach potential customers in every country in the world. （d） （3）A virtual community is formed， not in the physical world， but on the Internet. （e） It decreases costs. 
For Buyers： （a） Increases purchasing opportunities. （b） Provides competitive bid information. （c） Increases speed and accuracy of information. （d） Reduces costs. （e） A wider range of choices are available. （f） （4）Some products such as software， audio clips（音频剪辑）， or images， can be delivered via the Internet. （g） Society derives benefits. （h） Electronic payment of tax refunds， public retirement， and welfare support costs less to issue. （i） Electronic payment is more secure and faster. （j） E-payments are easier to control than checks， which can help protect against fraud and theft losses. （k ） You can work from home. （l） It reduces commuter-costs and traffic jams. （m） （5）It’s environmentally sound reduces pollution. （n） Distance education has emerged.