Back in the summer of 2011, Google introduced the Search By Image feature that allowed users to locate or at least try to locate where a particular photo has been used on other websites. You would think that Bing would have responded by now with their own version. Well, it took them 3 years, but they finally have.
Microsoft has introduced a similar functionally to its Bing search engine, called simply Image Match.
Image Match will let Bing users who are looking for images to click a button at the bottom with the Image Match phrase. When you do so, you will get a number of different versions of the same picture, in various sizes and resolution, so that you can pick the best one for use.
Also if you have a popular or famous image on your computer and you want to locate a match, just upload it straight to Bing.com/Images, and hopefully there will be a match. It took Microsoft a while, but now they have their own version. Better late than never I guess. Bing users should find this feature very useful.