“…Agosti and Ferro [1] and Haslhofer et al [6] showed how annotations created during reading can be used as metadata. Haslhofer et al [6], Ruvane [19] and Melgar [15] suggest a holistic view on annotation that is not limited to note-taking, but includes any form of metadata authoring (i.e., indexes, catalog records, tags, keywords, comments, notes), or even the creation of derivative documents or pieces of information derived from the initial information source. These annotations are created by any actor (expert or non-expert both in the domain and the annotation task) in the information interaction continuum, either during reading, information processing, or research.…”