Thanks for this video. I found it because a buddy who brought me to Steemit resteemed it. As a newbie on the platform I considered it very helpful! There were many videos and blogs that tell you "comment comment comment" but yours was straight to the point with a couple of good examples.
As you rightfully point out, be polite and never insult people, and I would add: particularly if you disagree with them. And hence I violate one of your suggestions: not to disagree or argue. I am just not sure whether disagreeing or arguing with the blogger is intrinsically a bad practice. I take it that many people don't like to be criticised, but most blog posts are built on opinions. Nothing wrong with that but it makes it (at least to some extent) controversial. Now, isn't it one of the basic principles of a good debate/discussion to not agree or argue, as long as everything happens in a civilized manner.
Else, if everyone only and always agrees, you just achieve something you'd probably call another bad practice: a whole bunch saying basically the same thing (praise) without adding much of value. Nothing wrong with deserved praise, but this shouldn't be an end in itself either.
Cheers
RE: STEEM SCHOOL EP 1 - HOW TO WRITE GREATS COMMENTS TO GAIN FOLLOWERS & UPVOTES!