When we create blog site using WordPress, whenever we add content, apart from appearing in the main page the same content also appears in the sub-pages like RECENT POSTS, CATEGORIES and ARCHIVES.
From Google Webmasters I came to know that Google considers this as duplicate content within the domain. I copy below the information from Google Webmasters.
Duplicate content generally refers to substantive blocks of content within or across domains that either completely match other content or are appreciably similar.
Google Webmasters suggests to use robots.txt (http://www.google.com/support/webmasters/bin/answer.py?answer=35303) to prevent Google from indexing those duplicate pages within the blog domain (like RECENT POSTS, CATEGORIES and ARCHIVES) where duplicate content is present.
What's your opinion on this?