Well, your post wasn't flagged, so that's a plus. I'm no SEO expert, but I've read a few things, so just passing along what I've heard. But I think the way it works is, put a link to the original in your post, and then a link to the post in the original, or a noindex tag.
Hopefully, eventually Steemit will have built-in link views like on Facebook, so you can actually see the content by just posting the link.