IICS2004, thefourthworkshoponInnovativeInternetCommunitySystems, s- cessfully dealtwith severaltimely topicsofdistributed systems, the Internetand virtualcommunities.TheworkshopseriescommencedwithIICS2001heldatthe Technical University of Ilmenau. After two more workshops, in Kuhlung ] sborn and Leipzig, this year was the ?rst time that the workshop was held abroad (Guadalajara, Mexico). Due to a broader international environment, the wo- shop this year was organized by the IEEE in cooperation with the Universidad de Guadalajara. Thepapersfromtheconferenceweremainlyfocusedonthreeaspects: syst-...

This volume of Lecture Notes in Computer Science contains all accepted papers th of the 5 International Conference on Innovative Internet Community Systems 2 (I CS), which was held at the Sorbonne in Paris, from June 20 22, 2005. The previous four conferences in Ilmenau, Rostock, Leipzig (Germany) and Guadalajara (Mexico) developed the pro?le of this event. Traditionally, there are topics discussed in three main aspects. All of them must be considered in a united manner in order to investigate and understand the emergence and evolution of communities in the Internet: knowledge about...

Nowadays, the Internet is the most commonly used medium for the exchange of data in di?erent forms. Presently, over 60 million machines have access to the Internet and to its resources. However, the Internet is also the largest distributed system o?ering di?erent computational services and possibilities not only for cluster computing. If the needs of modern mobile computing and multimedia systems are taken into account, it becomes clear that modern methods must ensure an e?ective development and management of the Internet allowing each user fast access to this huge resource space. The...