For the last while the general rule here on the US Server has been that we do not allow for the linking to/advertising of Skype/Discord chat groups via the forum or ingame mass mails. However that policy has now changed. Players are now welcome to link to their world chats or other discussion groups ingame and on the forum. Mass spamming of these invites, however, is still against the rules, so please keep all things in moderation. With that said, Innogames is not responsible or liable for these chats and we do not own nor moderate them and are not accountable for any ongoings within.