As Google update it’s algorithm so called Panda algorithm, you should aware with your low quality post in your website. So i made a simple plugin to easily add noindex and nofollow meta in your post. You can choose which post you don’t want Google to index it.
How to use Easy Noindex and Nofollow plugin:
1. Download and upload it to your WordPress plugin
2. Activate it.
3. Now the options will appear in post meta. (in New/Edit Post, just below the text editor box)
As you can see you have two options. Noindex and nofollow, if you choose noindex your post won’t be indexed by Google. And nofollow options if you don’t want any link in the post be followed by Google.
PS: It will available in WordPress plugin repository in a couple days. I have submitted it, waiting for response.
Update: Now Easy Noindex and Nofollow is available in WordPress plugin repository.