http://frompo.com
If you search from Frompo home page, you will get a list of related results. The results are usually generic webpages.
First, click on the "Image" category filter at the top left heading on frompo home page.
Under each image you will see more information about the image. This is helpful to find out at a glance if the photo will work for what you want it for.
More information on http://frompo.com