This plugin displays hatena bookmark comments on entry by using HatenaBookmarkBlogparts.
HatenaBookmarkBlogparts is here:
http://d.hatena.ne.jp/keyword/%A4%CF%A4%C6%A4%CA%A5%D6%A5%C3%A5%AF%A5%DE%A1%BC%A5%AF%A5%B3%A5%E1%A5%F3%A5%C8%C9%BD%BC%A8%A5%D6%A5%ED%A5%B0%A5%D1%A1%BC%A5%C4