"Don't call us, we'll call you."
A personal title is not a right, it's a privilege that is offered by the
Barrow-Wight. There's nothing automatic about the offer; when he feels that it's time to honour those who have posted not only quantity (i.e. numerous posts), but also quality (worthwhile contributions), he will contact those who are entitled to choose a personal title.
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'Mercy!' cried Gandalf. 'If the giving of information is to be the cure of your inquisitiveness, I shall spend all the rest of my days in answering you. What more do you want to know?' 'The whole history of Middle-earth..
.'