"This is it" is a free Chrome extension developed by omershiran. It falls under the category of Browsers and belongs to the subcategory of Add-ons & Tools. This extension is designed to simplify the Google search experience by directing users to their desired websites without having to go through the search page.

However, the extension also provides users with the option to unsubscribe from any site. After being redirected to the relevant site, users will see a "This is not it" button in the top right corner. Clicking on this button indicates that you do not want to be automatically redirected to that site anymore, and there will be no more automated referrals to that site.

"This is it" extension provides a convenient way to streamline the search process and save time by directly referring users to their desired websites. With its simple and intuitive interface, users can easily manage their preferences for automated referrals and enjoy a more efficient browsing experience.