Quote from ImTotallyTechy
I am a server owner and have a request for this plugin. I think this is a great mod, but put it in the wrong hands and its very bad. I have had problems with people copying my map and posting it as their own, and I want it stopped. I have found a solution (basically it crashes the Minecraft client when it is tried to be opened on singleplayer, corrupting the map and sometimes other maps), and while it works for me, it may not be suitable for other servers. I suggest somthing like letting us stop downloading to servers we dont want to happen by adding §b to our MOTD. When the Mod decects §b in the MOTD, it wont allow you to download the map.
I love the mod, but its sometimes really annoying. Keep modding
Sorry to say, but limiting people's freedoms never works. Some people will always use things for malicious purposes, but imposing draconian rules to punish everybody is not the solution.