A text box like that might be useful, but only if its kept up-to-date. and if empty, not visible to anyone. Perhaps it ought to auto-purge after say, ten days? 

hmm... we just got a strange idea that we wonder what others think of...
Might it be a worthy idea to have a profile-set indicator people can add concerning sections they'll use? Something that'll pop up below the online status (if applicable)?

example end result:
Name
Avatar
[i]X[/i] posts in [i]Y[/i] days
Online [i]n[/i] days ago
Casual & 1x1 player