21.   Pittman acknowledges that the technology will not take shoe leather out of the house-hunting process, but he is betting it will speed it up.

22.   The Maio brothers depended as much on shoe leather as on software.

23.   The NYCMap is an interactive database, a quilt of aerial photographs layered with geographic information, all of it painstakingly assembled using complex algorithms and simple shoe leather.

24.   They gobble crickets, apples, grass, even shoe leather, and they love to forage in landfills.

25.   You could probably deep-fry shoe leather and people would find it tasty.

26.   Old-fashioned shoe leather and long hours are at a premium.