can some1 explain it simply to me?
Simply put: if you want to track the progress of a multiplayer game, like Exit Path, Colony, etc., and have a username for a group/clan, you are allowed ONE alternate account for each game.
Your old account is called your "main" account and is the only account allowed to post messages. Alternate accounts for games are NOT permitted to post ANY kind of message on the site.
You have to change the biography on your 'main' account to tell everyone who your alternate account is and for which game. On your alternate account, the biography must tell us who your 'main' account is, and the comments on that profile MUST be closed so it cannot receive messages.