I've never been told re-posting is against the rules. Only if you don't own it. This is original work written for Steemit, and I re-post a few pieces every 200 followers gained or so. There is a regular #tbt community of posters on Thursdays. I usually save my re-posts for then, but have been unusually busy at the front of this week and gave myself some grace. ;) I also choose pieces that had lower numbers of viewers or the opposite-- they were especially well received.