Buyers don't have to worry about their money being gone and sellers running off, because the money is held by PixelMarket until both parties have confirmed that the order is successful.
Seller don't have to worry about charge backs, as PixelMarket covers 100% of charge backs, as long as buyers had confirmed their order. If buyers didn't confirm, sellers just provide proof of a successful transaction and they'll still receive their payment.
We encourage all users to continue posting threads here to advertise what you want to sell or buy, but to conduct the trade itself on PixelMarket. You can also post threads on the newly setup PixelForum at https://pxl.fm/forum