I've enjoyed your commentary for a long time. Equally, I've been curious about the origin of your pen name.
Let me guess. 'Slim' is not because you're in fact slim, but because you've been impacted by Memphis Slim. (Lucky you.) And Otepää derives from a favourable association -- perhaps you're parents or grandparents come from there or, like myself, you simply like the place.
Keep up your good work.