The application of the above-mentioned technologies and concepts in tourism gave birth to the ubiquitous tourism1 concept (OTC, 2003), which refers to the existence and access of tourism related services at any place, any time. Although tourism-related services are mostly related to content provision, more applications can be identified. In its entirety, content provision for e-tourism covers a large number of thematic areas: culture, urgencies, transportation, events, and so on. Thus, content might be both temporally and spatially labelled (LoVEUS, 2002; M-Guide, 2002). In addition, information seeking and avalanche-like content provision might guide the user to areas quite outside her/his initial focus areas.