“…Concerning web portal usability, it should be noted that the current studies are mostly concerned with domain specific portals. Namely, in the context of the global trend of web portal specialization, recent research related to usability evaluation is mostly concerned with the focused portals (somewhere called "vertical" or "domain specific" ones) such as enterprise or corporate portals (Boye, 2006), travel portals (Shelat and Stewart, 2004;Carstens and Patterson, 2005), news portals (Tsui and Paynter, 2004), library web portals (Brantley et al, 2006), tourist portals (Klausegger, 2006), healthcare web portals (Theng and Soh, 2005) and similar.…”