Seems like you can vote each month again, as I just got this E-Mail
Thank you for voting to add NodeBB to the Bitnami Library in our monthly contest. Unfortunately, they didn't receive enough votes to > > take the top spot last month.
Meet Last Month's Winner - MeteorJS
Still want to see NodeBB in the Bitnami Library? Each month is new chance to win! Vote for NodeBB again this month, and be sure to > > encourage your friends to vote too. You can vote for your favorite app each month until it wins.
Since community.nodebb.org are for discussing the platform of NodeBB, it probably make sense to have a group that is whoever has a verified nodebb deployment and as admin. Having such group will help motivate more people to ask questions, help those site admins and also a promote a culture of community target: the "user" of NodeBB software itself: the site admins of NodeBB.
I checked the group and it seems it doesn't exist yet.