Fabian Abel, Nicola Henze, Daniel Krause:
A Novel Approach to Social Tagging: GroupMe!.
Abstract
Common social tagging systems like Flickr, del.icio.us and
    others lately became very popular. The key benefits of these systems
    include that users get involved in the content creation process, can
    easily --- without overhead -- comment or annotate Web content, share
    resources with fellow users, and benefit from the comments / annotations
    of other users with improved retrieval support. With GroupMe! we extend
    the idea of current social tagging systems by enabling users to not only
    tag Web resources they are interested in, but also to create collections
    (groups) of these Web resources by simple drag & drop
    operations. The grouping metaphor is intuitive and easy for the users, and
    our evaluation shows that users appreciate the grouping facility, and use
    this feature to organize and structure Web content. Technically, the
    grouping of resources carries valuable information about Web resources and
    their relations, and can be exploited to improve the mining of Web
    content, e.g. for search and retrieval.
      
URL:
http://rewerse.net/publications/rewerse-publications.html#REWERSE-RP-2008-010
@inproceedings{REWERSE-RP-2008-010,
	author = {Fabian Abel and Nicola Henze and Daniel Krause},
	title = {A Novel Approach to Social Tagging: GroupMe!},
	booktitle = {Proceedings of 4th International Conference on Web Information Systems and Technologies, Funchal, Madeira, Portugal (4th--7th May 2008)},
	year = {2008},
	url = {http://rewerse.net/publications/rewerse-publications.html#REWERSE-RP-2008-010}
}