Assalam u Alaikum
Mujy Facebook Cover k bary main janna hai. kisi bhi event par facebook ki taraf se "Update profile with Cover" ka message aata hai. For example Syria mai bad amni par bht se users ko "Stop killing in Syria" etc ka message aata hai. jo k profile picture par lag jata hai aur aik choti c picture b hoti hai. yeh kaisy create hota hai. aur kaisy kaam karta hai. if anyone knows then please mujy b sikha dain.