Thanks for bringing it to our attention. We understand that when something is new that there may be people testing the boundaries OR not knowing exactly what is acceptable.

Our main message was simply to say that if they want to post in a community they should do there first and then resteem to their home page. It does look like he first posted to his home page and soon after put it onto a community. 

We view this as more of a way to get a post into two communities for discussion. 
Also we hope to have a button option to allow cross-poster to burn their share of the rewards.