you are acting like this is a covert operation that was just uncovered, this has been going ever since this board was created, to include other social media sites
multiple people have multiple alias's, that's just common knowledge especially when you get to know people and they tell you
admin doesn't have time to check everyone's alias
and i don't think Hangout has the resources to do this for the 10,000's++ of users
thats how the game is played, have multiple alias's and play trick or treat