I personally don't see how some of the battle of the week posts are any different than an Actifit post.
Me either. I think they should use the power to upvote content that helps the game and the community, rather than just to burn it for curation.
Given the possibility of an upvote will I probably try to do a post in the future?
I think you should. Regular or not, it helps to have people who are interested in more than just maximizing their game earnings.