| http://www.w3.org/ns/prov#value | - Just like the the real life, a virtual world is an alone together experience for many people, where others are stranger objects, trust is laboriously earned and grudgingly given, and friends are relatively few.Obtaining somebody's cooperation in a game is a highly personal social exeperience, made even more difficult by the lack of the usual trust-determining cues: age, gender, manner of speec
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