The explosive growth of Internet applications and content, during the last decade, has revealed an increasing need for information filtering and recommendation. Most research in the area of recommendation systems has focused on designing and implementing efficient algorithms that provide accurate recommendations. However, the selection of appropriate recommendation content and the presentation of information are equally important in creating successful recommender applications. This paper addresses issues related to the presentation of recommendations in the movies domain. The current work reviews previous research approaches and popular recommender systems, and focuses on user persuasion and satisfaction. In our experiments, we compare different presentation methods in terms of recommendations' organization in a list (i.e. top N-items list and structured overview) and recommendation modality (i.e. simple text, combination of text and image, and combination of text and video). The most efficient presentation methods, regarding user persuasion and satisfaction, proved to be the ''structured overview'' and the ''text and video'' interfaces, while a strong positive correlation was also found between user satisfaction and persuasion in all experimental conditions.

We present an intelligent web-based system, called hLife, which addresses the monitoring and improvement of health and lifestyle through the provision of customized dietary plans. Additional plan-related services including monitoring, alerting, reminding and evaluation, complement the functionality of the h-Life system.Several innovative components are integrated in order to efficiently manage the storage, access and retrieval of medical and personal data. Based on the latest technologies in intelligent and communication systems, the system provides the user with personalized dietary plans and lifestyle information, tailored to the individual needs. The h-Life system is based on a scalable and interoperable architecture that can be easily extended to accommodate future needs. Apart from a personal health assistant for the end-users, h-Life is a valuable tool for the health professionals that can remotely monitor their customers and manage the medical knowledge utilized by the system.