@inproceedings{ author={}, year={2003}, title={Supporting Communities in Massively Multiplayer Online Role-Playing Games by Game Design}, isbn={ISSN 2342-9666}, booktitle={DiGRA \&\#3903 - Proceedings of the 2003 DiGRA International Conference: Level Up}, url={http://www.digra.org/wp-content/uploads/digital-library/05150.48442.pdf} }