To find Facebook ID and username you most go to the left menu on the Facebook home page, in general setting, username. To find the ID for specific websites or games go to setting, app, and website and

 If you are managing a Facebook page either for your personal experiences or for your business, knowing more about audiences, user behaviors, time to posts, and other analytics factors is a must.

It is in Blockchain where "we have been running for a long time" regarding data integrity online, RBC analyst Mitch Steve said that he talks to CNBC in view of the ongoing Facebook privacy scandal.