Is there such a thing?
A search engine where you’re able to upload an image with a logo, and you get results of sites that are using that logo 🙂
I tried Googles image search: http://www.google.com/imghp (click on the camera, then upload image), but the results are pretty poor.
http://www.tineye.com/ is a great reverse image search. It basically searches through the internet to find images that are identical or very similar to your own.
There is no perfect 1-stop-get-all solution, but it’s a start.
Google images also has a feature now that lets you click-and-drag an image into the search bar and it will find all similar images.