Social media is helping as background-check tool for employers and they prefer reject a person after finding negative details (vs their ideology) about the candidates, pay few bucks to any social media monster, they will sell-out just anything. Not to mention, what some decide as negative values also depends on character of the person(s) taking that decision, vice-versa.
Of course employers also use many other things like so-called HR best practices, Facebook, Twitter, Whatsapp, Google & other search engines, Popular job sites, Private Detectives, Telecom Spy Tools, Mobile Apps, Pro Networks, Privacy Traders, etc to research potential candidates. Quite similar to tools employed by big fish competitors promoted by gymkhana club of cronies to hunt SMEs.
Think for example what kind of employees can be recruited by smart empires like Satyam Invincible, Lehman Brothers, Sahara Survir, Sharada Chits, Kalmadi Associates, Shah’s Empire, Raja & Co, Cola Miners the Great, etc.. There are thousands like these reputed and heavily advertised outfits. We know only a few which are abruptly exposed as an exception or as a collateral damage so other yet to be exposed cronies, can survive with impunity.
The most common reasons for employers to reject a job aspirant were that the candidate lied about his qualifications, had poor communications skills or above-average communications skills, shared confidential information of previous employer, do not fit organizational ethos, et al.. some other reasons we will never know as most predating big fishes die in open sea water beyond the reach of sober octopuses.
It’s both smart and essential for vulnerable job seeking preys to remember that much of what they post to the Internet – and equally important, what others post about them – can be freely found or bought by prospective big fish employers, and that can affect their chances of getting hired or fired down the road, and even much worse consequences for smaller fishes in other walks of life.