I have been flagging a lot of spam of late. Sadly, I still see these spammers and bots continue to operate. But I'm sure the folks at Steemit are taking notice.

I have been meaning to do more research on this, but I do believe being accurate with your upvotes (in terms of what turns out to be popular) gives you greater rewards. Rather than spamming the upvote button everywhere. Which is another reason I don't upvote myself.