For a nice community, good content and "killing" spammers or maliciously people from the start.

Organizing will be good to be present here.

Main spam is only advertising links from same user without a good posts in his history. But we can't decide that as many other things.

Also, flagging and downvoting can be made in a bad way just to hurt others.

I can't see a good solution to that, but maybe will be one at that point. We must see how it goes when members will double or even triple in numbers.

Till then,
have fun and cya soon!