I was wondering is it legal to scrape website for image urls (with scrape permission of course) and use images on your own website if you clearly state the origin of the image and who owns copyrights. I was thinking about using phpThumb to burn copyright text in to image so every image that I use from the other site is surely marked correctly. I could ask permission from the site owner for scraping, but the problem is that all photos are user submitted so I can't email everyone about their photos.
These are very specific photos so I have only few sources where I can get them so any stock photo companies are no no.
These are very specific photos so I have only few sources where I can get them so any stock photo companies are no no.