Del.icio.us
Del.icio.us lets you save, import, and tag bookmarks without fuss. As the most popular take-it-with-you bookmarking service, Del.icio.us can be a powerful tool for sharing content with other users.
7.3 out of 10
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Windows Live Favorites
Windows Live Favorites lets you save, import, and arrange bookmarks in subject folders, then view saved links without leaving the page--but it doesn't hook you up with other users' favorite URLs the way Del.icio.us does.
7.0 out of 10
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Diigo
Diigo lets you save, import, tag, highlight, mark up and share Web pages--offering more advanced research tools than Del.icio.us.
7.3 out of 10
CNET editor's take
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