Helio, Sky Dayton's heavily marketed mobile service for gadget obsessives, is frantically distancing itself from Amp'd, another "virtual" operator which declared bankruptcy, last week. In that case, it probably shouldn't be selling its high-tech handsets from the New York sidewalk like they were Canal Street knockoffs. The cash crunch at Amp'd, which rented network capacity from Verizon Wireless, came in large part because the gangsta mobile company was selling phones to all-comers to boost subscriber numbers: according to the bankruptcy filing, about 40% of Amp'd customers weren't paying their bills on time. Big-spending Helio says its customers have immaculate credit histories. In that case, it might not want to hawk phones as aggressively as its salespeople are doing on Broadway, in Greenwich Village, as this clip shows. True, Helio's only selling phones out on the street because of endless delays in completing the retail store at that same location. But it's rather disconcerting that the Broadway sidewalk stand is, for the moment, Helio's best-performing retail outlet; and that Sky Dayton, the mobile operator's Scientologist founder, is proud of that fact.