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MOAT (Meaning Of A Tag) provides a Semantic Web framework to publish semantically-annotated content from free-tagging. While tags are widely used in Web 2.0 services, their lack of machine-understandable meaning can be a problem for information retrieval, especially when people use tags that can have different meanings depending on the context. MOAT aims to solve this by providing a way for users to define meaning(s) of their tag(s) using URIs of Semantic Web resources (such as URIs from dbpedia, geonames … or any knowledge base), and then annotate content with those URIs rather than free-text tags, leveraging content into Semantic Web, by linking data together. Moreover, tag meanings can be shared between people, providing an architecture of participation to define and exchange potential meanings of tags within a community of users. To achieve this goal, MOAT relies on an architecture that can be deployed for any organisation or community and that involves a lightweight ontology, a MOAT server, and some third-party clients .

Every hour, HealthMap, an infectious disease-tracking Web site, culls through news Web sites, public health list servs, the World Health Organization's online pages, and other Web sites in six different languages to pinpoint outbreaks of disease that real-world doctors can then act on.

Linked Data is a term used to describe a recommended best practice for exposing, sharing, and connecting pieces of data on the Semantic Web. The practice emphasizes Web access to data using existing Web technologies such as URIs and HTTP. It also emphasizes links between related Web resources.

"The ECOSPACE vision is to bring together semantic and social web (Web 2.0) through a user-centric interoperability approach towards the collaborative web or web 3.0!"

This article posits a definition and theory for "Library 2.0". It suggests that recent thinking describing the changing Web as "Web 2.0" will have substantial implications for libraries, and recognizes that while these implications keep very close to the history and mission of libraries, they still necessitate a new paradigm for librarianship. The paper applies the theory and definition to the practice of librarianship, specifically addressing how Web 2.0 technologies such as synchronous messaging and streaming media, blogs, wikis, social networks, tagging, RSS feeds, and mashups might intimate changes in how libraries provide access to their collections and user support for that access.

NutchWAX ("Nutch + Web Archive eXtensions" ) searches web archive collections. The Web Archive eXtensions (WAX) include adaptation of the Nutch fetcher step to go against web archives rather than crawl the open net -- adaptation currently does Internet Archive ARC files only -- and plugins to add extra fields to the index that return an Archive Records' location in the repository, its collection name, etc.

The Semantic Web is necessary, but not sufficient to provide better technological support for online communities. Web services cannot be described independently of how they are used, because communities of practice use services in novel, unexpected ways. Although semantics are very important to create more 'intelligent' web services, what has been lacking so far is some formal notion of context of use. As Piers Young summarizes it, "that's where the problem of effectiveness starts getting addressed." Contextual elements like the community of use, its objectives and communicative interactions are thus important starting points for conceptualizing the pragmatic layer.

Invariant study is fundamental to any scientific research, especially when the research domain is as complex as World Wide Web. Invariants are supposed to be constant within the specified research scope. By well understanding the invariants we may effectively improve the knowledge over many complicated issues. Therefore, it is unsurprisingly for us to see the discussion of invariant study in the new Web Science Research Initiative.

The W3C OWL 2 Web Ontology Language (OWL) is a Semantic Web language designed to represent ontologies - information about how individuals are grouped and fit together in a particular domain. OWL can represent rich and complex information about classes of individuals and their properties. OWL is a logical language, where every construct has a well-defined meaning, meanings that fit together to support exact and useful representation of many different kinds of information. OWL groups information into ontologies in the form of documents that can be stored and transmitted across the World Wide Web in the same way that data and other kinds of information are and that can be completely and effectively processed by tools that extract the information implicit in an ontology.

The Sematic Web Client Library represents the complete Semantic Web as a single RDF graph. The library enables applications to query this global graph using SPARQL- and find(SPO) queries. To answer queries, the library dynamically retrieves information from the Semantic Web by dereferencing HTTP URIs and by following rdfs:seeAlso links. The library is written in Java and is based on the Jena framework.

Web 2.0 has brought many wonderful innovations and ideas to the Internet. We can no longer imagine the web without a social dimension, and we can no longer imagine an online world that is read-only - it is now a read/write web full of user-generated content. But there is another fairly recent innovation, which might have just as profound implications. We're speaking of the contextual user interface.

The recent announcement by Microsoft of a bid to acquire Yahoo! in a hostile takeover provides stark evidence of the continuing complexity of the intersection of computing and media businesses battling for dominance in the global market. Just as in the case of Time-Warner and AOL (Klein, 2003), the proposed Microsoft-Yahoo! deal is about convergence. The big difference, however, is the new context of threats and opportunities which have led to Redmond's latest effort to deploy its legendary financial muscle in pursuit of corporate goals of market domination. This difference emerges from changing conditions of networked media-computing which are in part associated with the rise of Web 2.0 and which provide an essential clue to understanding why Web 2.0 occupies such an important position in contemporary thinking about the Internet. As I will explain in this paper, Web 2.0 can itself be understood fully only by locating its emergence and significance within the broad movement of convergence of old and new media forms.

We are witnessing the rise of a new kind of web: contextual. You might not have heard or thought about it much yet, but you are already using it today. Search remains the killer app on the web, but context is quickly become a viable contender. Why? Because context is what happens instead of search.

The idea behind wectar is the fusion of two worlds, dmoz.org (open directory project) and delicious.com. This fusion is seen by us as a mutual enrichment of two stages in the evolution of the world wide web. What makes both of these two great services for sure true pioneers of web 3.0 is their generosity of making their unique knowledge available for mashups like wectar. Obviously wectar couldn't be without this generosity. We hope that we can repay this kindness to some extend by promoting both services through our web site.

The Gibeo Network is a new online service built by Gibeo. It's a rapidly growing community, a web annotation service, a open content-enhancing platform, an amazingly simple and useful tool for browsing and sharing the web. The Internet is still a fundamentally changing environment and this is the latest evolution in powerful online services. Simply browse the web by adding .gibeo.net to the end of any site, and it will be transparently enhanced by adding any community annotations and highlights to the page as well as enable the menu of personal tools available.

See also: http://lists.w3.org/Archives/Public/semantic-web/2008Apr/0005.html NaturalOWL is an open-source natural language generation engine written in Java. It produces descriptions of individuals (e.g., items for sale, museum exhibits) and classes (e.g., types of exhibits) in English and Greek from OWL DL ontologies. The ontologies must have been annotated in RDF with linguistic and user modeling resources. We demonstrate a plug-in for Protege that can be used to produce these resources and to generate texts by invoking NaturalOWL. We also demonstrate how NaturalOWL can be used by robotic avatars in Second Life to describe the exhibits of virtual museums. NaturalOWL demonstrates the benefits of Natural Language Generation (NLG) on the Semantic Web. Organizations that need to publish information about objects, such as exhibits or products, can publish OWL ontologies instead of texts. NLG engines, embedded in browsers or Web servers, can then render the ontologies in multiple natural languages, whereas computer programs may access the ontologies directly.

Triplify is based on the definition of relational database queries for a specific Web application in order to retrieve valuable information and to convert the results of these queries into RDF, JSON and Linked Data. Experiences showed that for most web-applications a relatively small number of queries (mostly between 3-7) is sufficient to extract the important information. After generating such database views the Triplify software can be used to convert the view into an RDF, JSON or Linked Data representation, which can be shared and accessed on the (Semantic) Web.

Kuling.net is a Topic Maps-driven web site where editorially assured cultural historic content meets Web 2.0. In line with the philosophy of collaborative web communities, anyone can contribute at their own level and with their own perspective on content. Kuling.net is developed with pedagogical intent...explanation found at http://www.topicmaps.com/tmc/speaker.jsp?conf=TM2008&id=Tommy_Nordeng

We want to make all the world's content more accessible, interoperable and valuable. Some call it Web 2.0, Web 3.0, the Semantic Web or the Giant Global Graph - we call our piece of it Calais. Calais is a rapidly growing toolkit of capabilities that allow you to readily incorporate state-of-the-art semantic functionality within your blog, content management system, website or application.

The OKKAM project aims at enabling the Web of Entities, namely a virtual space where any collection of data and information about any type of entities (e.g. people, locations, organizations, events, products, ...) published on the Web can be integrated into a single virtual, decentralized, open knowledge base