"The simple rule is, "Don't steal someone else's images." The moment an original image (or string of text) is fixed on a hard drive for the first time, it is protected by copyright. Any unauthorized copying of a protected image is an infringement of the creator's copyright, unless the use falls within one of the very limited exceptions to the copyright law, such as "fair use." In most cases, it is unlikely that the incorporation of an image into a commercial web-site would be considered a fair use."
