Many researchers introduce various approaches in improving usability in Web application, such as designing multi-layered interface [2-4] to ease novices in using the Web application with minimal features on user interface. However,
later they will need to learn the more advanced features, which leads to of the introduction of various type of user support or guidance such as sticky notes [4], Question-answering system [5] , a synchronize web browser sharing and voice chat [6] and, flash videos which can effectively support learning environment [7].
Many researchers introduce various approaches in improving usability in Web application, such as designing multi-layered interface [2-4] to ease novices in using the Web application with minimal features on user interface. However,
later they will need to learn the more advanced features, which leads to of the introduction of various type of user support or guidance such as sticky notes [4], Question-answering system [5] , a synchronize web browser sharing and voice chat [6] and, flash videos which can effectively support learning environment [7].
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