Have you ever tried Zemanda in your blog? Zemanda is a Fire-fox plug-in used by bloggers. When you write articles in Blogger, WordPress, etc, it’ll suggests possible relevant pictures, links, tags.
I’m sure it’ll save your time and help you to find relevant information very quickly. Give it a try. Once you used to it, you can’t survive without it.
Pictures are mostly suggested from Wikipedia, Flickr so you won’t be encountering copyright problems. It’ll work perfectly with English posts but when I tried it with my Tamil blog it didn’t work. May be Zemanta can’t understand Tamil