Duplicate Content on WordPress Blogs?

[gw3seo]

We are getting ready to add a WordPress blog to our established website.  Our plans are to place it in a subfolder on our website to maximize rank.  My question is...Do we need to utilize a Meta Robots WordPress plugin by Yoast or similar so that noindex,follow robots meta tags will prevent search engine indexing of search result pages, subpages and category archives?

We want to avoid the dreaded Duplicate Content Error and penalty.

Any other great SEO WordPress plugins?

Thank you for your time.

Brian

[wissamdandan]

I would add meta "noindex, follow" to author, categories , archives and date archives, tags.

and i think Wordpress SEO by Yoast is one of the best so far. and of course All in One SEO plugin

[TOMMarketingLtd.]

I am having a very difficult time with SEO by Yoast regarding duplicate title tags. I was also having duplicate page content because of all the cateories I have with my client's menu items and it wasn't apparent that SEO Yoast had an on off switch for robots meta tags for anything else than posts and pages, not categories.  (Am I missing something here?)

So I went the a la carte method and used two plugins that I have had good luck with, "Page Meta" that takes care of posts, pages and categories title and meta descp and "Robots Meta"  to make the categories no-follow.   I do love SEO by Yoast for the Page Analysis tool that is really fast for on page seo.  Any thoughts as to this approach?  I wonder about slowing down my site's speed with this approach.