Evony Silverblade

I'm confused. I have just read the TOS: "5.3 There are other exchanges that are operated by third parties on which Linden dollars are exchanged. Third party exchanges are not authorized by Linden Lab and Buying or Selling Linden dollars on third party exchanges are not authorized transactions. Third party exchanges are wholly distinct from both the LindeX exchange and Linden Lab and they have no affiliation with Linden Lab. We do not endorse or otherwise guarantee the legitimacy of the Linden dollar transfers offered on them, and we are not liable for purchases of such Linden dollars. Buying or Selling Linden dollars anywhere other than the LindeX is done so solely at your own risk. If you Buy Linden dollars that are traced to unauthorized credit card activity or other fraudulent activity, we will recoup these Linden dollars from your Account. The only authorized exchange is the LindeX." Where does it say they are not allowed anymore?