Nothing is supreme in the words, if you go few years back then you could think you can't stay without orkut and YAHOO Chat was like god of internet but still substitute has already come.
Facebook is the drug of the 21-st century in the world of technology Mark Zukerberg is the father of all this!
To be honest I hate Facebook, dont have a personal account and probably will never make one, but I do use Facebook to attract visitors to my SEO company
Now a days it's really impossible to pass a day without Fb. The era is of social networking and one can share his or her ideas with so many people through Fb.