Hiring Practices and Antitrust Concerns

It may not be as sexy as hearing that corporations have colluded with eachother to keep prices high (say in the TFT or DRAM markets), but I see in the NY Times this morning that the Antitrust Division of the Department of Justice has quietly opened an antitrust investigation into tech companies such as Google, Yahoo!, Apple, and others.  According to the Times, the direction of the inquiry is unclear, but seems to be focused on “whether the companies involved agreed to not actively recruit employees from each other.”  See?  Not very sexy.  The Washington Post apparently was the first one to mention the investigation.