25 Free Stock Photo Sites

Useful article from Digital Image Magazine annotating 25 Free Stock Photo Sites Most of them were familiar, but there were one or two that were new to me. It's worth reading the entire article for the overviews, but I'm listing the engines below in case you just want to jump in.

Stock.XCHNG
everystockphoto
imagebase
morgueFile
openphoto
Stockvault
unprofound
Photo Rogue
freerange
Geek Philospher
Cepolina
Abstract Influence
Woophy
PhotoRack
freepixels
Design Packs
Freefoto
Imageafter
Pixel Perfect Digital
Free Stock Photos
FreeDigitalPhotos
PublicDomainPhotos
Nations Illustrated
Free Historial Stock Photos
Kave Wall

A few others included in the comments:

Lost and Taken (texture images)
Studio7Designs (nature)
Free Images (general photography)
Photoeverywhere (travel images)
Photoree (creative commons)

Some of these offer free use of images based on certain conditions, while others charge and you'll find some with a mixture.