Image via CrunchBaseFound these links, and before I forget where I saved them I thought it would be a good idea to post them here. These are interesting tools to provide you with related links and pictures or images for your blog content.
Zemanta supports Wordpress, Blogger, Typepad, and the list goes on. I'm using it for this particular post only as a test. The image comes with a credit.
I feel awkward to use pictures that were not taken by my camera, but apparently, the images are safe to be reused.
photodropper.com for Wordpress
Online search in Flickr: