The proliferation of electronic content has notably lead to the apparition of large corpora of interrelated structured documents (such as HTML and XML Web pages) and semantic annotations (typically expressed in RDF), which further complement these documents. Documents and annotations may be authored independently by different users or programs. We present AnnoVIP, a peer-to-peer platform, capable of efficiently exploiting a multitude of annotated documents, based on innovative materialized views. I. OUTLINE In recent years, more and more software tools, including the most user-friendly ones, such as text editors, have started to export their contents into some structured document format, such as HTML or XML. Moreover, annotations have become very popular as a means to add information to a given document. HTML Meta tags, Dublin Core [1] and social networks' tagging are among the most common methods to express annotations. Here, we designate by annotation any simple statement in the...