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  • Actually, "A/B split" (Wordie doesn't like slashes, I guess).

    "In e-mail marketing, A/B split is a marketing test method where an e-mail subscriber list is split into two groups; every other name in the list is sent one e-mail message and vise versa. The open and response rates to each message are tracked." --Webopedia

    June 13, 2009