social bookmarking
ソーシャルブックマーク（social bookmark）
Bookmark manager
Models of collaborative tagging
Semantic Web
social bookmark link generator
Social media
Social networking service
social software
google.iconsocial bookmarking
image social bookmarking
define social bookmarking
wikipedia social bookmarking
weblio social bookmarking
kotobank social bookmarking
jisho social bookmarking