I just clicked to this post (hoping Hive account@mikethemug came online and sent some Burst to me, and I saw "This post was hidden due to low ratings."

Why is that? I'm new to Steemit and I'm trying to figure our why this can be, also why this post has now $0.00 (it seemed there was something around $30) if this post was promoted, has 44 upvotes, etc..

Also it seems there is no way to downvote posts on Steemit - so how can this happen with this post?