On the deleting comments thing, I feel strongly that simply re-scanning
the file-system for static pages should
never delete content.
Imagine this scenario:
I re-organize my whole web site. Perhaps I'm even thorough enough to
set up some sort of auto-magic redirection from the old locations to
the new ones - perhaps not. Either way, I go and tell Static Pages
to re-scan my file-system and learn about all the new locations. But,
oops, there go all my page comments, out the window! Do I have a
current backup handy?
Instead, when a file "disappears" from the file-system, Static Pages
should simply stamp its record of the file as "broken as of DATE".
That way, the system admin can come back later and either point the
comments to a new instantiation of the page, perhaps archive the
comments elsewhere, or choose to junk all the comments. But
user-contributed content should never just be transparently disposed
of without human intervention.