PALM BEACH, FL - Eileen Harrington, the Federal Trade Commission's point person on the national do-not-call list and other proposed rules, went into a den of telemarketers Friday and got an earful of complaints. But Harrington, who met with industry representatives for a roundtable discussion at the DMA Teleservices Conference 2002 held here at The Breakers hotel, gave back as good as she got. "You don't have a lot of credibility, to be perfectly honest," Harrington, the FTC's director of marketing practices, told the audience of approximately 50 telemarketers. If telemarketers had adhered to the present rules, which give each...