(4) the person is a two-way communication. The page has been found between the buyer, the seller, the seller.Can build a good relationship with the buyer. V-this is a good marketing campaign, but the high cost.
(4) the sale by the parties. The two-way communication Are found between buyers and sellers. Vendors can build a good relationship. To shoppers V This promotion is best, but the cost is high.
(4) sales by individuals, a two-way communication with the face between buyer and seller The seller can built a good relationship with the buyer, throwing this as a great marketing promotion, but the high cost