May
Zemanta is an amazing WordPress plugin. An add-on that every blogger needs.

What Zemanta Does
This amazing program/widget/add-on:
- Appears automatically in every WP Dashboard you use
- Finds related images for every post, including license details. 1 Click inserts the image
- Finds related authority pages for you to link to including NY Times, Wikipedia, AP . . .
- Inserts the links as Related Articles at the end of your posts
- Gives you in-text links (if you want them) to authority sites, including Amazon
- Finds tags for your post

That is just ‘out of the box’. If you sign up for an account then you can personalise Zemanta:
- You can find related articles from your own blog