Quote Originally Posted by Bellsong View Post
Eh, suck it up. Random invites are annoying and they don't stop being annoying just cause they're made with good intentions.

Report people being especially nasty and move on. The name is listed so people can blacklist chronic inviters if they wish to. (I'm just going to give SE the benefit of the doubt and assume that blocking stops NN invites)
I generally tell people that don't want the annoyance anymore to turn off their sprout. NN invites are also blocked automatically after one or two refusals, but I think this resets after a little time, perhaps a day I'm not sure.
If it wasn't the players random inviting it would be the system itself automatically anyway with a popup asking the new players if they want to opt-in. No need to be offended by it, it's not like FC invites that are spammed all day long like all the ads one gets stuffed into their real life mailbox.