AT&T may have about the best selection of choice handsets (smart or otherwise) available in the States right now, and continued iPhone exclusivity has definitely brought a windfall of new subscribers to its wireless division, but Ma Bell wasn't built on cell towers alone. There's still an extensive landline division to support, and it seems the company is leveraging the current economic doldrums to make it a little less so, joining the layoff crowd for the second time this year by shedding a