... mechanisms.¹

Throughout this document whenever we say ``free software'' we are referring to freedom of action, not zero monetary cost. Or to use the stock clarification: we mean free as in ``free speech'' not ``free beer.''

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... industry²

Note on terminology: the term ``Internet services'' is potentially ambiguous. The term ``Internet Service Provider'' (ISP) is commonly used to mean a company that provides basic Internet access, i.e. connectivity at Layer 3 in the OSI model. The term ``Application Service Provider'' (ASP) is used to mean a company that delivers end-user services such as e-mail, i.e. functionality at Layer 7 in the OSI model. Throughout this document when we say ``Internet services'' or ``Subscriber Services'' we mean services at application level.

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