O'Reilly Radar > How Friendster Lost Its Footing
I have always attributed Friendster's decline to two issues. One was its performance issues (well-addressed in the article). The other was that Friendster fought its users. Its users wanted groups and Friendster tried to stop them from making it happen.
Frendster凋落の理由は
・パフォーマンスの問題
・コミュニティ機能を（ユーザーの強い要望にも関わらず）作らなかったこと
だそうです。