Chat Questions: Social Bookmarking

Does your library have a social bookmarking account? If so, on what service?
Which of the services presented this week do you think would be more useful for a library? Why?
Have you looked at any of the other social bookmarking services, such as CiteULike or Connotea? If so, what did you think about them?
Other than to keep track of links and populate research guides, what other ways can a library use social bookmarking?
Do you see problems with allowing people to use any term they choose as a tag for a website? If so, what problems? Are there advantages that outweigh these problems?

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