Originally Posted by Kumabjorn
That reminds me, I have a few books where I haven't been able to find a cover online, I saw one of those books in a used book store a while ago. I seriously considered going in there and use my phone to take a picture of it and load that into Calibre, but ethically I couldn't bring myself to do it.
I don't see that as any more unethical than downloading one and I don't see downloading a cover as being particularly unethical. Not saying I am right of course.
If you get permission from the store to take the picture, you should be in reasonable shape ethics-wise.