dates in filenames?

I see that various solutions to the problem of unix timestamps have
been proposed.  I wrote my own blogging software in Python, and have
recently switched to pyblosxom.  Here's what I did in my software:

When my software saw a "new" file, e.g. File.txt, it would make a link
to that file.  The link has the same name as the file, but with -mtime
appended, e.g. File-1096229979.txt.  If that file already existed,
then of course it wasn't a "new" file.  Then, if somebody edited the
file for any reason, it would have a new mtime because a new file
would be created.  However, the original -mtime file is still there,
and its mtime is used instead of the new mtime.

This may seem sub-optimal because it means that the original copy of
every edited file is still sitting around.  I consider that a benefit,
though, because whenever an edited file is found, I modify it to
insert a "Previously Published on" with a link to the previous
version.  That way, somebody can see what I've changed.

So, if that wasn't desirable, then you could create an empty
File.stamp whenever you see a File.txt without a File.stamp.  Give it
the same mtime as File.txt and use that mtime for File.txt from then
on.

I'm just looking for suggestions and/or wisdom, not asking anybody to
do my programming for me.

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