What is obj on facebook?

As an AI language model, I don't have access to personal social media accounts and can only provide general information about Facebook. 'Obj' might refer to a specific person or account on Facebook, which I don't have information about. But in general, Facebook is a social networking site that allows users to connect with friends and family, share photos and videos, post updates, and get involved in communities and groups with similar interests. The platform has over 2.8 billion monthly active users and can be accessed through a desktop or mobile device. Facebook has also been involved in several controversies regarding data privacy, censorship, and the spread of misinformation.