If you want to post without taking the funds you can decline payment and if you want to help distribute other authors work you can resteem and promote their posts, but when established authors begin posting newcomer's content on their account it is usually only to exploit them for their SP.
I really hope that this is not your intention.
even if it's not his intention, it will be the perception of those who are seeing it, more so because the posts will most likely make it to the #1 spot on the trending page, I think it's a bad idea to post content from other writers.