Ok, I think since I joined to the steemit cleaners channel I'm more "safe" to comment and share my knowledge through steemit. Commenting is an art as you say but there is a following steps like READ the post I stop my own upvote to comments because I learned that is better use my "0.04$" vote for someone else who make good stuff in steemit. Thanks for making this place cleaner and support all of us who make good content.