try http://sxc.hu/ best and high resolution and watermark free images for web and print media purpose. Also try http://inmagine.com/ http://fotolia.com/ these sites provide watermark free images for web designing purpose. you need to capture the screen while you mouse over on the thumbnail and the preview image comes up. thats it http://photolibrary.com for bigger and high quality images and a watermark comes on the center. But, on maximum image the watermarked area is easily editable through any graphic editor (photoshop). http://herotruko.com/ here you get lot of stuff for non-commercial use. enjoy
I use - http://www.photo-wizard.net Here is where you can find some other inexpensive stock photo directories: http://www.small-business-software.net/stock-photography.htm Another site list can be found here: http://www.webmaster-elements.com/webmaster-graphics/photos.htm Goodluck