Miiverse + SB
Some people on the SB community come across as inexperienced, so post in the comments some of your tips and I'll say some of mine on how to not seem nooby!
First, don't always ask everyone "key?", especially if they obviously haven't completed the project. If they announce the completion but don't share the key or forget to, then possibly ask in a more complete way.
9そうだね プレイ済み