What is the ruling of Sharia on the Facebook website regarding posting pictures and sharing posts and exchanging opinions?

The ruling on websites, internet pages, and modern technologies depends on how they are used and their purpose. If they are used to spread good and clarify truth, then they are a form of jihad and obedience. However, if they are used for permissible, disliked, or forbidden matters, then their ruling is accordingly. As for images from the camera (photography), there is a difference of opinion, and the preponderant view is permissibility, unless something arises that makes them forbidden, such as being of a immodestly adorned woman or for the purpose of glorification.