Good Afternoon Thirst Quencher.
Thank you for your comment. The service you are referring to is called a proxy. And yes AGORACOM admins are able to identify who is using a proxy and ID who is using it.
Rest assured that AGORACOM members caught using multiple aliases and properly dealt with.
Thank you for your comment and your contributions within the AGORACOM community.
Regards,
AGORACOM