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Comes from being elsewhere on the internet. I learned the fast and hard way that the sooner you let people know in no uncertain terms that they are unwelcome in your space and to interact with your content, the better. I've been called 'block happy' by more than one person but I give no cares, if you're going to come in here and be a troll and spam and not contribute anything of value to the community then get out. I've also been called 'ban happy' when I used to be in charge of stuff, because as soon as it was obvious people were just there to spam or whatever I didn't even bother with anything other than that ban hammer nice and swift :)