I tried with a couple of my photos. This one first:
Of the 'similar' images it returned, here are the three I found most interesting:
The top one was my favorite, so I fed that one to Google, and picked my two favorite results:
Again, the first one was my favorite, so I did one more round. Here's my favorite from round three:
The Google search engine is obviously picking up on the red/orange tones in the original photo and using that to match images. I decided to try a black and white photo:
And picked these three as my favorite matches:
The top one was my favorite, so like with the color photos, I fed that one to Google, and picked my two favorite results:
One more round, using the first of those two photos, and my favorite is:
I learned two things from this. One, Google image search relies on color of images to find matches. Two, B&W photos on the internet are cooler than color ones.
I do like the randomness in the matches, and how these unrelated images work together. Ultimately, however, it's a fun diversion, but not much more than that. It does give me some ideas. I want to convince some other artist friends to play along with something that could be fun.