Recently I went back and added "(tye)" to (tye)Re: A question of style because I often refer to that node when questions about what difference & and () make when calling Perl subroutines. [..] now I can link to it easily without having to memorize a node ID (I have a hard time remembering the node ID of tye and I actually end up using that quite a bit).
I have a few of those also - scant, and not referred to quite as often, but the point stands. I would go so far as to say that such nodes deserve an edited, unique title that identifies them by content, rather than author. As far as looking them up is concerned, I found the Personal Nodelet a good place for the really frequently used ones, while the homenode does a sufficient job for the occasionally useful ones. As an admittedly more clunky alternative, one might also refer people to people a <a name="faqchest">'ed section on one's homenode rather than directly to the node in question (and who knows, they might linger and read the other interesting nodes as well).
I'm not going to start a crusade against vanity tagging, since although I do occasionally find it annoying, I don't feel it isn't enough so to warrant more than a silent protest by cleaning others' tags from the subjects of my posts. My point is that I do agree with merlyn in that I don't see how tags offer anything that cannot be achieved otherwise with no more or very little more effort.
For the record,
Re(1.2.1.3.1) style subjects would certainly be less ugly than
Re: •Re: (tye)Re: (FoxUni)Re: Re: foo bar.
Makeshifts last the longest.