With its really large collection of images that can be freely used, Picture Of A stands as a really helpful resource for graphic artists of every nature. Not only does this site bring together images which are open source, it actually covers most categories that you could shake a stick at.
Art, Entertainment, Food, Nature, Object, Technology and Sports… these seven categories (and one in which miscellaneous & uncategorized photos are featured) can be accessed from the main menu, and a search tool is likewise provided for you to specify what you have in mind and see what crops up.
In any case, the most recent images that have been added to the database are all highlighted on the homepage. And a button for having a random image displayed is included as well. Any way or the other, this site is going to add enough fuel to your creative fire to let you get any assignment satisfactorily done.
PictureOfA.net In Their Own Words
Find inspiration in photos.
Why PictureOfA.net It Might Be A Killer
So many categories are featured that you are bound to find something to use in any project of yours.
Some Questions About PictureOfA.net
How often are new images added? Where do these mainly come from? 
