http://diavis.info/wiki/index.php?Introduction

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 [[SocialLandscapes]]
 
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 Recently, Social Networking Sites (SNS) have been spreading rapidly (e.g. mixi, Friendster etc..). 
 SNS are online environments where people create their own profiles for the explicit purpose of connecting with their friends or other users they meet through the site. The main feature of such sites is the expansion of the number of your friends and acquaintances.