I see Pinterest appearing disproportionately in image search.
I practically never see Pinterest in the results. I suppose it really depends on what you are searching for.
We might be doing very different queries :) If you search for makeup related content, Pinterest comes up a lot because people tend to pin and curate makeup related stuff there
If lots of people have spent time curating the Pinterest content, and searchers are likely to be looking for curated content, doesn't it make sense that Pinterest would rank highly in the search results?