Redirecting any number of players to other servers is frowned upon. I don't really understand why you didn't just leave him a message on skype, though.
Invalid has been banned on that server, twice!
Once for logging on, not entirely clear on the reasons for the other...
You may come back, the ban served its purpose to force a discussion. In all likelihood, with your new server, I wouldn't have been on at the same time as you to talk to you about it. If you cared enough to post here, then we got to have our talk
Just understand, the no spam/advertising rule is in place to prevent players suggesting other servers, and thus directing the player base off of Zedwork. It's both to stop the beloved regulars from being coerced off the server, and to prevent them being annoyed by anyone trying to get them to do what they do not want to do. Also prevents abuse and hijacking of accounts via software masquerading as a server. To make rules effective, there cannot be exceptions. Though no IP was left, it still pushes for a player to leave the server for another.