Excluding articles from DejaNews

[Rich Graves]

I just noticed this in their FAQ, dated February 20th:

     Q: I don't want my Usenet articles to appear in Deja News. What do I do?
     A: We have implemented a feature whereby if your article contains an
        X-Header looking like 

                   X-No-Archive: Yes

     your article will be excluded from our database forever. 

Anyone know if other search engines support this? I think such a standard
would be a Good Thing. Of course there will be the odd private archive,
and of course some nastyfolks might grep Usenet just for X-No-Archive
headers, but this is a good step for casual alt.support - type privacy. 

-rich