It was launched in 2010. The platform offers a set of interfaces and programming tools that allow developers to integrate into the open "social graph" of relationships personal and other elements such as songs, places and Facebook Pages. Apps on www.facebook.com, external websites, and devices are all allowed to access the chart. The main concern is that users publishing content through a third-party provider risk losing their web ranking if their service is removed; and the open graph could force the web presence to connect to Facebook's social services, even for people using their own publishing channels. Facebook for Websites represents the idea of ​​making one's site more social than Facebook and driving growth through these social interactions. So, Facebook for Websites refers to the loose term of using the platform on a website for a richer social experience. Facebook for Websites is designed to enable certain Facebook features on your website, such as the Like button. It also allows you to use Facebook login and registration for your website, much like Open ID. This eliminates the need for your own user login and registration.