GFY has a lot of great sellers, I want to buy traffic from them.
But in order to reduce the risk of trading, the thing I want to make sure of is, whether should I pay first or the seller set up the traffic channel first. Is there anything else should pay attention to? What's the general rule here for payment, Thank you.
But in order to reduce the risk of trading, the thing I want to make sure of is, whether should I pay first or the seller set up the traffic channel first. Is there anything else should pay attention to? What's the general rule here for payment, Thank you.

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