You get potential payouts based on the likes you get within 7 days you have posted something. Your post was 6 days old. If I resteemed it you would only have had 1 day exposure (to potential paying upvotes) on that post to the people that follow me instead of 7 days.

Marketing a post is a bit more complicated. @positivesynergy and I are still trying to figure out whether it is profitable or not but this gives you a lot of exposure quickly and builds your following.