Minimum number of signature for week : 50. Average 6-7 a day .
50 is minimum required posts in a week of time for getting eligible for payout?
50 posts within 7 days might lead to spamming across the forum; you must need to reconsider it.
Most campaigns these days require 20 to 25 posts per week. You may increase number of participants for more effective participants.
Sample calculations:
20 participants X 50 posts = 1000 posts (Legendary : 100 USD Hero: 90 USD Senior 85 USD)
40 participants X 25 posts = 1000 posts (Legendary : 50 USD Hero: 45 USD Senior 40 USD)
50 participants X 20 posts = 1000 posts (Legendary : 40 USD Hero: 40 USD Senior 35 USD)