This is certainly true, but is probably not of major concern to most home users. There isn't a lot added to SE other than the Internet connection. If you have a small network and have to dial up to get e-mail, consider installing VPOP3. It will dial into your mail server, download all the mail for all your accounts, distribute the mail into mailboxes on your local computer and let everyone on your network log onto the local computer to get their mail. The VPOP3 computer acts exactly like a standard POP3 and SMTP server to the other computers on your network.
Family members can send e-mail to each other and to the Internet in one batch.
Send them to the VPOP3 computer and it will put local e-mail in the local mailbox and send the rest off to your Internet server on the next call. But if you ever did need the information, you needed it quite badly. Even if you don't need it today, bookmark this site. It would appear that by the time all the kinks are out of USB, it will be obsolete. Several manufacturers are banding together to create USB II, which is supposed to avoid the mistakes of USB I. If you are thinking about buying any USB peripherals, please take a look at the article.