If you periodically prune your neighbors...
If someone hasn't logged in for a while and they don't clear their towns, I keep an eye on how long they're gone for and if it's a week or more I will probably delete them, but it depends on the situa...
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I delete people when they stop playing. It seems like that time might be coming again, but im gonna wait a while cos I think some of the people I cant tap might have something to do with this weird handshakes not showing up glitch.
