AFP - Dec 16 - Bullying is a big problem in social networks. But South Korea's top social network Cyworld is touting several distinctive features -- including making people prove who they are in the real world before they can join their virtual one. Cyworld, founded in 2001, now has ~20M users. In June, Cyworld had 22M visits a month, Twitter 5.1M and Facebook 2.2M. Last month, Cyworld had 18M visits, Twitter 7.4M and Facebook 6.7M. Despite the trend, Korean Click, the local market research group, says it expects domestic social networks to raise their game and compete more dynamically. Cyworld is trying to do just that. Two months ago it introduced the C-Log, incorporating some features of Facebook and a Twitter-style short message service, to meet the competition. FULL ARTICLE @ AFP