Miss Prism

Google has recently altered something in the back end for images generally. At work when I try to image search & do funky tricks with it I get awful results now.

That's odd. I used Google to identify a couple of fairly obscure images (of a bridge in France) yesterday and it found the source almost immediately.  However, it's possible that either Google is favouring its own competing photo sharing/storage site.

Always remember that if a commerical service gives you something for free then you're the product not the customer.

I've just carried out a search on Google for BR green class 37 using the search term BR green class 37 flickr.  Every result was for green class 37s on Flickr.

You have to be specific on what you are looking for, otherwise you'll end with random results.  Same with every major search engine.