If your business model relies on a constant flow of free traffic from Google you might want to rethink your business model. I don't like to rely on charity traffic nor do I like wasting time complaining when things don't go my way. I prefer to resolve issues and find new opportunity when change inevitably happens.
For example with this new image change I am trying a new experiment with some high res images. Having a larger preview image should make it easier to attract click-throughs for these higher res images.
For all the upset webmasters out there, I encourage you to keep complaining instead of working on your site. It makes it easier for me when my competition isn't working on how to make their online business stronger.