Hey everyone, i wrote a post on my blog about 3 ways to avoid duplicate content with blog posts which i think will increase the SERPs and possibly inner PR Strength.
First thing you need to do is
Get rid of the Archive Pages
Second:
Use One specific Category for your Post
Last but not least,
Make use of the excerpts effectively
To read it in more details and more examples to understand better feel free to visit the original post
3 ways to Avoid Duplicate Content in Wordpress