That is one of the biggest risks of the blog in my opinion. The lack of good content in the commentary section due to people wanting to make some cash and just saying - oh what a great post to anything. Nothing wrong with saying what a great post to great posts.
But hopefully the community will grow out of it.
Most of the people doing it are either bots or simply people who don't know how to speak english and use whatever words they know to be fitting.
Huge Problem, Cheers man.