Ookaboo is a site which offers images which freely available under the Creative Commons. After searching, you can download the image you want or simply click on the HTML code to embed in your blog or social network, and the credits will appear automatically.
Veezzle is another site worth searching for free images. Veezzle is a search engine for images, which then directs you to the original site. From there you can decide whether that particular image is free to share under the Creative Commons.
Part of the fun with images is to alter them, turn them into something different or simply use an effect for fun. Below are four sites where you can play with effects ranging from photo editing to creating an Andy Warhol effect:
Photo 505 - free digital effects for fun
Citrify - a free photo editing tool
BigHugeLabs - fun effects
Splashup - a free image editing tool
Which of these sites have you explored recently?
Picture of Photographic lens
thanks to Atomicbre from English Wikipedia and Ookaboo!