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I am creating article blog and think a lot about SEO. The question is how should and what headers should I send.

If the article is changed, okey, I am changing Last-Modified header. But what if there are new comments to article, should I change header? Or search engines will not scan my web page again due to old Last-Modified header?

Also, is it okey to use both Last-Modified and ETag and Expires or choose one?

You can read the full article at SEO Chat Forums – Google Optimization

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I am creating article blog and think a lot about SEO. The question is how should and what headers should I send. If the article is changed, okey, I am changing Last-Modified header. But what if there are new comments to article, should I change header? Or search engines will...