They have been for a while. There are employers who do the same thing now as well. If anything, not having a social media account will likely get you flagged as suspicious as they subscribe to the concept of "if you have nothing to hide, you have nothing to fear". We're also looking down the barrel of new laws which will abolish anonymity and require all websites to verify the identity of the user as well as Google's new web DRM implementation coming down the line. In effect, we now have the beginning of a privatised social credit system.