Can Social Bookmarks Improve Web Search?

author: Paul Heymann, Department of Computer Science, Stanford University
published: Feb. 25, 2008,   recorded: February 2008,   views: 17941


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Social bookmarking is a recent phenomenon which has the potential to give us a great deal of data about pages on the web. One major question is whether that data can be used to augment systems like web search. To answer this question, over the past year we have gathered what we believe to be the largest dataset from a social bookmarking site yet analyzed by academic researchers. Our dataset represents about forty million bookmarks from the social bookmarking site We contribute a characterization of posts to how many bookmarks exist (about 115 million), how fast is it growing, and how active are the URLs being posted about (quite active). We also contribute a characterization of tags used by bookmarkers. We found that certain tags tend to gravitate towards certain domains, and vice versa. We also found that tags occur in over 50 percent of the pages that they annotate, and in only 20 percent of cases do they not occur in the page text, backlink page text, or forward link page text of the pages they annotate. We conclude that social bookmarking can provide search data not currently provided by other sources, though it may currently lack the size and distribution of tags necessary to make a significant impact.

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Reviews and comments:

Comment1 Malik, October 21, 2008 at 11:47 p.m.:

Nice.. This removes the ambiguities I had about Social tagging. I had the same thought that it's not that useful for searching especially in case of subjectivity. Less than 5% .. oh God.. but why people beating drums about Social tagging.


Comment2 Anand Sampath, July 21, 2009 at 8:38 a.m.:

The tutorial has made me very clear and also given me a very useful information about the social bookmark (SB).

Comment3 Leah Gordon, April 8, 2010 at 4:45 a.m.:

What makes a site index worthy? (~09:00)

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