> Then there's google images, which shows the images on the google site itself (a vast copyright infringement, unlike the search engine result pages these are copies of the images at quite high resolution).

Well, image search would be a lot less useful if it didn't show images. And Google's image thumbnails are very modest resolution copies. The larger image previews displayed when clicking a specific image result are actually hotlinked from the original source, and hence not copyright violations: https://en.wikipedia.org/wiki/Inline_linking#Copyright_law_i...