I agree; downvoting these accounts is important. However, it does become hard to distinguish where the line is; I saw an account get nuked by Steemcleaners for including a referral link in their post.
Downvoting should be reserved for those who are obviously not trying to behave well on Steemit, and especially for spam like this. Nice post :)
Yeah, I agree. As for steem cleaners, they have a channel in steemit chat where that can be reached to discuss issues like that. I think they mostly do a great job and from what I've seen, they are open to correction. I don't want Steemit to become some massive MLM farm or spam advertising hub, so I appreciate their efforts.