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I am far from thinking you did it to earn on your post :) I have published some that generated just a fraction of the comments you already have there - and it took me way more time to handle all the engagement than to write the post itself. Not that I would complain about it - I love when people read my posts and discuss them.

Getting conversations going is fun. Some comments just don't take them anywhere. I can hope that I made a few people think :)