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Steemfest is the yearly gathering of Steemians which takes place at Kraków this year. https://steemfest.com/ Concerning ImpactN I'd love to DM you our One Pager or have a quick look at http://impactn.global

We aim at setting up a SDG-community within Steem. And that's what we'll discuss at the round-table at Steemfest.