Remove the new Google Image Search’s increasingly annoying ‘Bing-bling’, by using Firefox + GreaseMonkey + a potent combination of Google Image Basic and Direct Images in Google Image Search!. Image search then reverts to how it used to be. Clicking on a thumbnail in the search-results takes you straight to the largest version. When searching for images “larger than…” you may need to tell Firefox (one-time only) what application to open the image with, rather than popping up a “where would you like to download this to…” I told it to open large images with Firefox itself, and large images then open in a new Firefox tab. Nice.
And, while you’re at it… Flickr: link all sizes.