There are several uses for search by image, though; mentioned below are only a few:
Image search reverse is one of those valued creations that are often a bit tricky to come up with specific uses for. Certainly, you can use it with an intention to track down the actual source of a photo, although it is also valued for finding out product names, some recipes or even living rooms. These are a few of the preferred uses of photo search.
With a search engine like Google, you can merely put an image in Google Images search field and it'll find similar images. Reverse photo search do the same. Regardless of which service you use, you'll eventually get all sorts of things when hunt for an image.
Whatever your social means of choice are, a number of fake profiles exist that tries to friend you. As numerous of these make use of random photos along with stock pictures of the internet, hunting for the fake is extremely simple with a search by image technique. Reader also uses it on the way to look for all kinds of fake profiles.
This technique works outstandingly for any kind of social platform where people are developing their own profiles from Twitter to Facebook, or even a number of dating sites. You can do the same with the intention of debunking viral posts and social status updates in news feed too. Spam, bogus accounts, and perversion are infuriating enough as it is. With a super-fast photo search you can easily report it. It is even valued for Craigslist listings that look too proficient to be precise.