If Charter doesn't care, why would they bother sending a registered letter then? Some one is caring some where. -- The Firefox alternative. »www.mozilla.org/projects/seamonkey/
The letters are sent to Charter from the group claiming the infringement as they don't know your physical address. Charter forwards the letter to the user.
A registered letter is the letter from the law firm telling you to pay or go to court.
Two different letters for two different, although related, issues. -- Google is your Friend