• Recruiting Via Your Employees’ Social Networks – NYTimes.com
  From the article:

Until recently, Facebook might have been more likely to be viewed as a barrier to getting a job. Cautionary tales circulate of job offers rescinded after an employer discovered unseemly content on an applicant’s Facebook page. Social network users have been advised to sanitize their personal pages when job hunting, lest potential employers spot an inappropriate photo or comment.
But now more personal pages, profiles and social networks are serving as fodder for companies looking to fill jobs. To mine its employees’ social networking contacts for potential hires, a business can pay for services from companies like Appirio or Jobvite, whose service Mr. Kennedy used.