Observed one user promoting "flag other's high value content, it's great!" while abusively self-upvoting his own posts/comments. Since said user's posts mainly reflect an urging of everyone to join and invest (as well as use a referral link for BitConnect, which is now seriously under scrutany for having no white paper or proof of a trading bot even existing.... yet another crypto-scam), I came to the conclusion he was committing a type of online financial fraud and called him out. He hit me with just 5 flags (brought my Rep of my 2 week old account down from 50 to 5, his wannabe followers hit me with a few flags of their own to bring it down to 3).
Since reading the "White Papers" I realize the abuse and option to commit fraud are built into the system, so now I choose to call out the system rather than the individual abusive users.