User blog comment:DeeDust/Worth trying, worth doing....? Something like that./@comment-24101790-20160518234333

Typically if the story has this listing: "Content is available under CC BY-NC" on the bottom of their story, it's not a good idea to narrate it if you plan on monetizing your channel as it will likely end up violating the license that prohibits articles under that license being used for commercial means.

I would also recommend messaging the author and getting their permission to use their stories before narrating them even if it isn't under CC BY-NC as a formality/kindness so they can check out the video and maybe add it to their page.