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Jasp - 12:42 am on May 18, 2008 (gmt 0)
We already have a very common situation where the contents of robots.txt doesn't prevent robots.txt actually being fetched: Clearly robots.txt is included under the root directory, but still must be requested and requested repeatedly to see if it has changed. So just as
If you use robots.txt to block it, that would mean that googlebot should not even request robots.txt - an insane loop. And of course, you don't use meta tags in a robots.txt file.
User-agent: *
Disallow: /
Disallow: /*.txt$
would prevent all .txt files from being indexed then so should
Disallow: /robots.txt
prevent that particular .txt file from being indexed without problems.