I did a Lycos search looking for more real-world examples, and following
up on a lead in www-talk archives, I found that the META tag is being
used by Verity's "Topic WebSearcher" software. It looks from the blurbs
on http://www.verity.com/ that this is a current commercial product.
Another reference leads me to beleive that ALIWEB is indexing using
META tags (see: http://www.webcom.com/html/meta.html )
I should also have remembered that META tags are used in several
Netscape hacks (i.e. http-equiv="Refresh" ).
I found the META tag used on real documents at other sites, including
http://www.ibm.com/ and http://www.microsoft.com/. (The latter
case may have been created by Internet Assistant for Word 1.00.)
I found a prior thread on meta in the working group archives where
Roy Fielding says: ... "It is currently used within thousands,
if not hundreds of thousands, of HTML documents world-wide and many tools
exist which require META." ....
http://www.acl.lanl.gov/HTML_WG/html-wg-94q3.messages/0125.html
(This also offers some history of the tag)
I'm inclined to think that META has escaped out of the lab into
the wild.
-- Albert Lunde Albert-Lunde@nwu.edu