Keep in mind, from what I read on their campaign you can make a maximum of 20 posts per day but they are not telling users to make the max daily man. That choice is solely on the user of the forum. Chasing that paycheck.
I have to disagree to this ,the most part of responsibility goes to the campaign, when they tell forum users that they will pay up to 20 posts a day, then it's pretty clear that most if not all of them will try to maximize that number, and that's 140 posts a week per account.
If the choice is between manager and no manager - I'd rather see them hire a manager. If the choice is between yahoo and some random nobody - I'd rather see them hire yahoo.
True, and Yahoo is a decent manager indeed, but it all goes down to how many people they are going to accept, knowing that most of them will attempt 20 posts a day, if say they are accepting 100 members, that's 2000 posts a day for him to check, not sure if that is doable, he might just ruin his reputation by managing this campaign, so i would run the numbers before even thinking about accepting this.
good luck yahoo.