Odd, I'm not sure if it's what you guys are talking about, but using Firefox 2.0.0.6 and Win XP, when I hover the mouse over the poster's name, 'Send PM' and 'Add to address book' appears underneath (on top of the existing text which makes it look rather.. crappy, tbh.)
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Please "talk up" if your comprehension white-shifts. I will use simple-happy language-words to help you understand.