Why are my webpages not getting indexed?

[Dino64]

I want to figure out why a lot of my pages for my website are not getting indexed by google.  I have installed the SEO plugin by Yoast to my wordpress website.  Under the titles and meta section of the plugin options I have set categories and tags to noindex.  In WMT, google is saying that all my category pages and most of my tag pages are not being indexed.

I want to make sure that the reason these pages are not being indexed are because of the SEO plugin.  I want to prevent duplicate content so that is the reason I have set my categories and tags to noindex.  Please respond if you know the absolute answer, its very important that I have my website indexed the proper way I want it to.

[Alick300]

Hi Dino,

I would like to add one very informative article and please also do check comment section of that article there is also few good suggestion with great answer of Ryan.

http://moz.com/ugc/8-reasons-why-your-site-might-not-get-indexed

Thanks

[RyanPurkey]

Hi Dino. You can look at the code of each page that would be affected by the plugin selection of "noindex" and check for the same "noindex" in the meta entry there on the public facing page. That will give you the absolute answer as that is what the search engines will be checking for when they crawl the site. See: https://support.google.com/webmasters/answer/93710 and the following:

To prevent most search engine web crawlers from indexing a page on your site, place the following meta tag into the section of your page:

To prevent only Google web crawlers from indexing a page:

[Linda-Vassily]

If you have set pages to noindex, then Google will not index them.

Are you saying that you have other pages besides the ones you marked noindex that are not getting indexed?