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IADIS International Conference WWW/Internet 2010To test the idea a prototypical implementation tool has been implemented and integrated within a Webencyclopedia called Austria-Forum. To evaluate the system, a theoretical framework was invented to conductthe tools potentials and limitations.Thus, the paper is structured as follows: Section 2 presents the basic idea of this new approach. Section 3shortly discusses the implementation of the idea. Section 4 provides an analysis of the potentials andlimitations of this novel tool by integrating it into a large Web based encyclopedia system called Austria-Forum and by evaluating it with a theoretical framework. Finally, Section 5 concludes the paper and providesan outlook for future work in this area.2. APPROACHThe basic idea of QueryCloud is to offer related content to users via the so-called resource-specific tag cloudby automatically linking related documents via the search query terms of the users. On the one hand, tagclouds represent an interesting alternative navigation tool in modern Web-based systems (Helic et al. 2010,Trattner et al. 2010b). Moreover, they are very close to the idea of explorative browsing (Sinclair andCardew-Hall 2008), i.e. they capture nicely the intent of users coming to a system from a search engine -users have searched in e.g. Google, Yahoo! or Bing and now they click on a concept in a tag cloud thatreflects their original search intent. On the other hand, search query history, i.e. queries that are “referrers” tofound documents are an invaluable source of information for refining user search in the system. It is ourbelief that an integration of such a tool online encyclopedia systems would greatly contribute to leading usersto related documents.In order to make the idea work the users search query history needs to be obtained in a resource specificway. This is achieved by collecting the HTTP-Referrer information from a user coming from a search engineto a particular website (resource) within a Web based encyclopedia system such as Austria-Forum.Austria-Forum 1 (Trattner et al. 2010) is basically a wiki-based online encyclopedia containing articlesrelated to Austria. The system comprises a very large repository of articles, where new articles are easilypublished, edited, checked, assessed, and certified, and where the correctness and quality of each of thesearticles is assured by a person that is accepted as an expert in a particular field. Currently, the system containsnearly more than 130,000 information items.Figure 1. Example of resource-specific query term/tag cloud and resource list of a tag within Austria-Forum rendered byQueryCloud system.For example, suppose users go to Google and search for “Elfride Jellinek Biographie” and select the link from the results1 http://www.austria-lexikon.at/235