Perhaps a bot to leave a comment on the hive post.
"We've found similar content on the Steem blockchain. Posting the same content to both chains reduces search engine rankings for all posts on both chains."
Actually the peakd team could add it to their front end, instead.
@jarvie, is this worth considering?
When I wrote my reply I was thinking about written words in the comment.
So, I started thinking about images.
It would be interesting to have a shared image repository for both blockchains.
Quite frankly, I don't think Googlebot tosses out penalties for shared images.