This question drew my eye today:
and I found out there are several other questions with the
*OBSOLETE* modifier (for lack of a better word) in the title on CR-meta. This surprised me, as I have never seen this on other metas before (could be me, but still).
It seems to me that just like tags, 'answered' notices etc., this is meta-information about the question and should be handled otherwise. It is currently handled otherwise even: it is locked and has a historical note.
So why the extra tag? It seems to go against most thoughts about good titles and how to add meta-information about a question, so my first reaction would be to suggest an edit to remove it.