The keyword used to be "synergy" - the justification for a host of mergers with varying success...

|By:, SA News Editor

The keyword used to be "synergy" - the justification for a host of mergers with varying success rates. In 2011, it's the spinoff that's in: Twenty public companies this year have announced they're breaking pieces off, including Abbott Labs (ABT), Kraft (KFT), ConocoPhillips (COP) and Sara Lee (SLE). And whatever the reason, Dan Primack says, it's good for the economy.