These stone tools generally consisted of sharp flakes battered off a stone core, but early hominids also did more sophisticated flaking and retouching to sharpen and straighten their blades.

FORBES: Magazine Article

Private equity firms that come in and sharpen operations, as Bain did, can make a sleepy company more focused.

FORBES: Wall Street vs. Manufacturing? "We Need to Get Wall Street Off Our Backs."

The more services Yahoo offered, the longer its guests would stay and the more Yahoo could pry into their habits and sharpen efforts to target them.

FORBES: The Killer Ad Machine