Social bookmarking services, we must use a lot, QQ bookmarks, Mister Wong, 9Fav, Baidu collection and Google bookmarks are our contact more, and delicious bookmarks (del.icio.us) and digg are more popular abroad. These bookmarking services are relatively popular, there is basically no big difference in function, and Riku recommends Qitera this new social bookmarking service to you on KuAPP, it is inferior