RE: How many posts does it take to have a winner? Lets look at top Steemit authors for an answer.

[alifton]

@liberosist After the last fork people who post more than roughly once every 4 to 6 hours averaged over a 24 hour period have their post rewards reduced. That change right there stopped the post shotgunning effect where would would just post 200+ posts a day and hope for a hit. ;-) It also helped to reduce the massive post clutter which would bury posts before people would even see them, making them harder to find for upvoting even if they were quality posts.