Social networking bookmarks: to use or not to use?

Social network bookmarking has infiltrated our country since 2004. It has replaced the function of saving our favorite articles by browser, and it features high preservability and durability. However, from the emergence of Delicious to now, a large number of social network bookmarks have been triggered. Should we use them or not? If we use, which one should we choose? Today, let's discuss this issue.