Looks promising (used your link), but I just tried to copy over an old steemit post and it isn't the smoothest of tasks. What I normally do is write my posts in Wordpress and then copy them to steemit, do a quick format for picture locations and I'm done. Takes less than 5 minutes to transfer from Wordpress to steemit. 
To transfer to Niume, you can only copy the text. All links, photo's, video's, etc, have to be manually added. Also, you can't add photo's from links. So those photo's you've been putting on an image host site for steemit now have to be tracked down on your computer and re-uploaded again. If there was a way to copy html it would be way easier. 
Regardless, I'm probably still going to put my posts there. Having content monetized over the long term is something I think Steemit is missing. A picture, drawing, story, or really any longer post has value longer than 24hr/30 days and it's good to see something to reflect that.