I obviously try to improve my visibility. (Just like as you did, posting your charts in my first post -which were very welcomed-).
I posted commentaries inviting people to this exact post -which I think- many will find interesting. My comments have been specifically posted in topic-related posts, and have not commented more than once in each single post.
In total have been 8 comments. I think this is not considered spamming.
Still appreciate your interest and recommendations.
Yours Sincerely,
Sigmund
Spam is not just recognized by relative quantity, as I understand it most people subscribe to the idea that if a comment is only promoting something else then it is spam. Even if you do this once, it is spam.
I got into a discussion with your commenters on the subject and tailored the information to the context, and that made it not spam, though I was promoting a back link to my own work.
Anyway thanks for answering my queries and good luck.