http://www.freerangestock.com -- all the images are 2400x1600 at least, and there are no photgraphers to email, and all images can be used commercially. And keyword searchable.
If you want to be a contributor, feel free to upload your pics. Unlimited space Choose your own price 70% for you, 30% for us (server cost much) 12TB Minimum shortest size, 2500pixels (so only good quality media. Upload also other stufff... Look @ pixel-vector.com I have also my pics with resale rights http://pixel-vector.com/contributors...me=dvcgraphics