Freebie Images WordPress Plugin provide you a stock of free images to use in your articles.The plugin gives you a micro format search interface inside your WordPress Admin and the the images are perfectly sized for blogs – between 300px and 400px width.

You can get it from Freebie Images.com

Quick Installation Guide:

1. Download and extract Zip file on your computer
2. Upload the freebie Images plugin folder to the /wp-content/plugins/ directory on your blog. Do not rename the plugin folder.
3. Activate plugin in WP Admin plugin panel

Source : Crestock.com Blog