We placed only one tag
("Library of
Congress") and two machine tags on each
photo when we loaded them. Any other tags you
see were added by the community; we are generally
not controlling the content of Flickr tags,
notes and comments, but we reserve the right
to remove added content for any reason.
I hope they don't ever take it OFF flickr. I think the really interesting thing here is the idea of creating a permement, open, free online compendium to history.