Reverse Image Search

I have heard of people doing this, to see if anyone was borrowing their images. But I never knew of how to do it. Even though I would class myself as technical, I thought this was a service you just paid for.
How wrong I was!
Just go to http://images.google.com
See that little camera icon in the search box, click it.
Either point it to a url of an image, or the easier way I think. Click ‘upload an image’, then select ‘choose file’, and upload a smaller version.

Then the magic works, google will list if any other sites have your image, and some similar ones.

I found that uploading a smaller version was easier, i think the permissions on the files on the servers, holding the image file, hinder the search.

I hope this helps you all.