Để hệ thống hóa ý nghĩa của nội dung Web â € "nói cách khác, làm nhiều hơn chỉ đơn giản là đánh dấu lên các yếu tố nội dung cú pháp -" Khung miêu tả tài nguyên được đưa ra như là một cách để đánh dấu siêu dữ liệu. Thêm nhiều điều để điểm, RDF cung cấp một phương tiện trao đổi siêu dữ liệu, | Application and Tools 207 Another reason is that Amaya is never likely to become a browser for the masses and it is the only client to date with full support for Annotea. The main contender to MSIE is Mozilla and it is in fact of late changing the browser landscape. A more mature Annozilla may therefore yet reach a threshold penetration into the user base but it is too early to say. Issues and Liabilities These days no implementation overview is complete without at least a brief consideration of social and legal issues affected by the proposed usage and potential misuse of a given technology. One issue arises from the nature of composite representations rendered in such a way that the user might perceive it as being the original . Informed opinion diverges as to whether such external enhancement constitutes at minimum a virtual infringement of the document owner s legal copyright or governance of content. The question is far from easy to resolve especially in light of the established fact that any representation of Web content is an arbitrary rendering by the client software - a rendering that can in its original form already be unacceptably far from the specific intentions of the creator. Where lies the liability there How far is unacceptable An important aspect in this context is the fact that the document owner has no control over the annotation process - in fact he or she might easily be totally unaware of the annotations. Or if aware might object strongly to the associations. This situation has some similarity to the issue of deep linking that is hyperlinks pointing to specific resources within other sites . Once not even considered a potential problem but instead a natural process inherent to the nature of the Web resource referencing with hyperlinks has periodically become the matter of litigation as some site owners wish to forbid such linkage without express written or perhaps even paid-for permission. Even the well-established tradition of academic .