Comment Not ready for prime time (Score 1) 109
This is one of those Google features that I scratch my head over. It sounds great but is almost completely useless. I tried several images both from the web and from pictures of famous locations that I had taken on vacation. I tried product photos, and place photos. I tried the search page and the Chrome extension. I got one page crash (drag-n-drop an image to search by), and no results that could be considered anything but awful. The results were so far off the mark as to be silly. I posted a chair and got action figure toys.
The one example of useful results and the reason I will keep it around is that is showed other sites that are using images that I have copyrights too but were captured from my site. I guess if I had the time I could go ask for some credit and get a little pagerank love.