OER Knowledge CloudConference PaperLive annotation and content discovery in personal learning environmentsLive annotation and content discovery in personal learning environments2010Corneli, JosephMikroyannidis, AlexanderOpen Educational Resourcessocial learningLMSpersonal learninglive annotationcontent discoveryenghttp://oro.open.ac.uk/26429/http://oro.open.ac.uk/26429/