The purpose of installing Frontpage Extensions on your server is:
I. If your a web hosting provider
To allow your customers to use different features that are unique to frontpage extensions.
II. If your a customer
It is to allow yourself to take advantage of different features offered by Frontpage. This can include automatic graphical counters, and other nice stuff. I personally dont use Frontpage for more then testing so I can't tell you all the features Frontpage offers. But a lot of people use it, and ask for it, so it should be good.
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