Last year I participated in an MMO survey in which AO was featured. The survey was for J?â?Ârg Fl?â??gge's MBA master thesis about user-content in MMORPGs. He sent me a copy not too long ago with the results, which were interesting, to say the least.
You can read or download the thesis at this url: http://mercury-dragons.org/study/UserIn ... gge_v1.pdf