This campaign still is risky to join for members. You should use an escrow if you want to win the trust of people.
No offense but your English is also not very good and that breaks the confidence of advertisers.
The most importance that we think is to win the trust of people for our site(secondstrade.com) itself and us.
If we are trying to win the trust of people easily only for the this thread, as you said we only have to use escrow.we know that A good man is offered the service for free.
But we want to run this signature campaign by ourselves
If we keep paying the payout for months, we will get trust of people like other sites that run well signature campaign without escrow.
And then we will also get the trust about our site and us.
We also know that time is needed to do such thing
English skill is very important, but the most importance is our will that we will keep giving the payout.
I think that doing is more important than saying
Payout will be always paid on every monday morning