Photo Dropper is a WordPress plugin that searches Creative Commons and licensable images for you, then drops it directly into your WordPress post without ever leaving your dashboard, making it super easy to use. Instead of having to go to an outside site to get an image (likely getting distracted by browsing for the images – sometimes for an hour or more) you can just do it all within your WordPress interface. Less work, no distractions, more blogging.
==> Get the plugin by searching from your Add Plugins page or go to http://wordpress.org/extend/plugins/photo-dropper
Once you have Photo Dropper installed, just go to your post or page screens to use it. Click the Photo Dropper button to start.