This is the 18919th most frequent Korean word.
싸이월드
"싸이월드" (Cyworld) is a now-defunct South Korean social networking service.
싸이월드 is used as the subject of the sentence, referring to the specific social networking platform.
싸이월드는 과거에 인기있는 소셜 네트워킹 서비스였습니다.
Cyworld was a popular social networking service in the past.
싸이월드 is used as an indirect object, indicating the platform where actions were performed.
많은 사람들이 싸이월드에 사진을 올려 친구들과 공유했습니다.
Many people uploaded photos to Cyworld and shared them with friends.
싸이월드 is used as an indirect object related to the action of registering.