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If you travel frequently, or want to read your e-mail in several different locations, you might want to register with one of the hundreds of companies that provide e-mail access through the Web. There is no charge for this service, since advertisers cover most of the operating costs, but there are two definite drawbacks to using Web-based e-mail. Firstly, the services are so popular that access to your mail can be very slow, and
secondly, because you must usually be online to use the service, you will be paying telephone and ISP charges for the entire time it takes you to read and reply to your messages.