"negipo" (who is also a user on Twitter and here) has been ++'ed 4 times and --'ed 0 times by a total of 4 people.
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Operation Sign, User and Reason
++'ed by hysysk (いいなぁ。)
Tweet: negipo++いいなぁ。
++'ed by showyou (とかでもしとけばいいのかなぁ *Tw*)
Tweet: negiponegiponegipo negipo++ とかでもしとけばいいのかなぁ *Tw*
++'ed by hetmek (面白い)
Tweet: negipo++ 面白い
++'ed by ksakai (because of http://polog.org/archives/2007/12/20162250.php)
Tweet: negipo++ because of http://polog.org/archives/2007/12/20162250.php