Mining the Social Web for Recruiting

What recruiters know about you, whether you are looking for another job or not.  And new developments in these areas.   Note the combination of search with knowledge structure focused at a particular task.  " ... What recruiters know about you is about to get a whole lot deeper than what you put on your resume ... "   " ... An emerging class of search engines is taking a big data approach to recruiting by crawling the Web for every bit of data about you, assembling it into a master profile, rating your knowledge, skill levels and interests, and serving it up to recruiters who can filter it by location, skill, the school you attended and a range of other criteria. ... "