I read the complaining post about @firepower being a serial spammer, not the case in my opinion, but it is just my opinion. I scrolled backward through several days of his comments and the only same comment that showed up was "Thank You". When you are trying to encourage people and support a large number of people your brain does get fried trying to think up what to say, so you use a generic phrase on occasion. Spam is a comment completely off the topic of what the poster was talking about, or a non comment like "upvoted and followed you follow and upvote me now" . So not guilty of spam.