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| social purchasing site (Social purchasing sites, such as CrowdZap, which assemble buying groups and achieve economies of scale in purchasing, including the "Big Switch" initiative to save money on energy bills, are injecting competition. A.Rezvov) | |||
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| social purchasing site (Social purchasing sites, such as CrowdZap, which assemble buying groups and achieve economies of scale in purchasing, including the "Big Switch" initiative to save money on energy bills, are injecting competition. A.Rezvov) | |||