Nice information sharing. I thing all serious who want to earn some seroius money and reputation may not violate any of this don't s. And as fer as multiple account, their will be very limited advantage for it because if you don't perform here well,so can't achieve anything. So their multiple accounts will be useless automatically. But most bad thing is flagging, if some spam accounts are started flagging random post to spoil this platform then it will be really a bad day for steemit.