Huge pre-launch expectation and Apple’s own ‘magical’ iPad marketing may turn out to be a negative play for the Cupertino computer company, with at least one market research firm claiming potential consumers lost interest in the device after the announcement.“Not only did Apple fail to convince new buyers, it may have lost many potential buyers who now say they don’t think they need an Apple tablet computer,” Retrevo research revealed.Retrevo’s study asked consumers whether or not they had heard about the tablet before the tablet was introduced and again after the announcement. The word definitely got out as the number of respondents saying they had heard about the tablet rose from