992 INtrODUctION The contribution of context information to content management is of great importance. The increase of storage capacity in mobile devices gives users the possibility to maintain large amounts of content to their phones. As a result, this amount of content is increasing at a high rate. Users are able to store a huge variety of content such as contacts, text messages, ring tones, logos, calendar events, and textual notes. Furthermore, the development of novel applications has created new types of content, which include images, videos, MMS ( multi-media messaging), e-mail, music, play lists, audio clips, bookmarks, news and weather, chat, niche informa- tion services, travel and entertainment information, driving instructions, banking, and shopping (Schilit & Theimer, 1994; Schilit, Adams, & Want, 1994; Brown, 1996; Brown, Bovey, & Chen, 1997). The fact that users should be able to store the content on their mobile phone and fnd the content they need without much effort results in the require- ment of managing the content by organizing and annotating it. The purpose of information manage- ment is to aid users by offering a safe and easy way of retrieving the relevant content automatically, to minimize their effort and maximize their beneft (Sorvari et al., 2004). The increasing amount of stored content in mo- bile devices and the limitations of physical mobile phone user interfaces introduce a usability chal- lenge in content management. The physical mobile Chapter 2.35 Content Personalization for Mobile Interfaces Spiridoula Koukia University of Patras, Greece Maria Rigou University of Patras, Greece, & Research Academic Computer Technology Institute, Greece Spiros Sirmakessis Technological Institution of Messolongi & Research Academic Computer Technology Institute, Greece Copyright © 2009, IGI Global, distributing in print or electronic forms without written permission of IGI Global is prohibited.