Photopin.Com is a free service netizens, specially bloggers can use for searching millions of free Creative Commons Licensed photographs from Flickr and include them inside your content easily.
Simply Visit Just search for any topic using the search box (e.g. “WordPress”etc.), preview the image and then click “get photo” for downloading the image including its proper attribution link. The service uses Flickr API and searches only creative commons photos which you can use in your weblog.