Windows Phone 8 enables you to choose the apps you want them to display its status on the lock screen of your phone. For instance a notification that you just got a new Gmail email.
You have more people using one computer and you don't want them to be able to shut it down using a shutdown button on Windows logon screen, this is how you remove it.
As it seems the once leading social network Myspace owned by Justin Timberlake got a major redesign and upgrade, want an invite and see how it will look like?