Here I'll be listing some reasons why you should use the Internet.
Say that you own a business with a fax machine/telephone. You need to answer every call individually, and there are additional fees that vary a lot based on how many people call. However, if you use an online website, you won't have to answer every call individually, you can spend more time behind the desk serving customers instead of answering questions over the ol' tele, and you pay a small fixed rate (which may slightly increase every few months if you have more "website traffic", but will then go back down).
W.I.P
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