Your request to exclude web text from search engines reminded me of a few months ago when I foolishly posted to this very forum some things relating to specific clients of mine. I don't know what I was thinking. The client did a Google on themselves and found my posts filled with unkind words. They called me on it and I looked like an idiot. Huge mistake on my part. Fortunately, the macosx.com people removed my posts immediately per my request, but the damage was done.
I wish my posts had been "excluded" from search engines!