This volume contains the extended papers selected for presentation at the ninth edition of the International Symposium on Web & Wireless Geographical Information Systems 2 (WGIS 2009) hosted by the National Centre for Geocomputation in NUI Maynooth 2 (Ireland). WGIS 2009 was the ninth in a series of successful events beginning with Kyoto 2001, and alternating locations between East Asia and Europe. We invited s- missions that provided an up-to-date review of advances in theoretical, technical, and 2 practical issues of W GIS and Intelligent GeoMedia. Reports on ongoing implemen- tions and real-world applications research were particularly welcome at this symposium. 2 Now in its ninth year, the scope of W GIS has expanded to include continuing - vances in wireless and Internet technologies that generate ever increasing interest in the diffusion, usage, and processing of geo-referenced data of all types - geomedia. Spatially aware wireless and Internet devices offer new ways of accessing and anal- ing geo-spatial information in both real-world and virtual spaces. Consequently, new challenges and opportunities are provided that expand the traditional GIS research scope into the realm of intelligent media - including geomedia with context-aware behaviors for self-adaptive use and delivery. Our common aim is research-based innovation that increases the ease of creating, delivering, and using geomedia across different platforms and application domains that continue to have dramatic effect on today's society.

This book constitutes the refereed proceedings of the 6th International Symposium on Web and Wireless Geographical Information Systems, W2GIS 2006, held in Hong Kong, China in December 2006.

The 24 revised full papers presented were carefully reviewed and selected from over 130 submissions and cover a wide range of topics from the semantic Web, Web personalization, contextual representation and mapping to querying in mobile environments, mobile networks and recent developments in location-based services and applications. The papers are organized in topical sections on location-based services, W2GIS applications and prototypes, wayfinding, mobile and wireless GIS, W2GIS personalization and agents, data management and data retrieval methods, as well as semantic geo-spatial Web and ubiquitous W2GIS.