By definition, social bookmarking is done by amateurs. There is
no oversight as to how resources are organized and tagged. This
can lead to inconsistent or other wise poor use of tags. For exam
ple,
if
a user saves a bookmark for a site with information about
greyhounds but only tags the site with the term “greyhound” and
not also with “dogs” or perhaps “dog racing,” that resource might
never be found by someone looking for information about breeds
of dogs. Because social bookmarking reflects the values of the
community of users, there is a risk of presenting a skewed view
of the value of any par ticular topic. For example, users might
assign pejorative tags to cer tain resources. In addition, social
bookmarking means storing data in yet another location that you
have to maintain and update.