WP plugin: Social Bookmarks Bar There are quite a few social bookmarking plugins for WordPress but this one seems to allow more sites than anything I have seen so far. Personally, I find it real difficult to identify a particular social bookmarking site from teensy icons (besides the obvious technorati, yahoo etc) but this tends to be the norm.
You should also try Zlitt
I am unable to check out you link as i am getting this below
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had its name changed, or is temporarily unavailable.