I agree, when I can't find results with Google, Yandex will usually give me better results (I've updated the page with the information you've provided, thanks!).

I usually start with Google however, as it'll often contain much more results (up to ~500), which means it'll likely be easier to find a website containing the original version of the image.

Reverse Image Search...

I find Yandex often gives me the best results. Especially with finding other images from the same photo set. From what Ive heard it also does face recognition as part of its reverse image search, so it will find other photos with the same person.

It's still quite incomplete and not very well organized, but it should hopefully still be useful to some :)

If you have any suggestions, please let me know!

I've begun writing a guide to find larger images