Sites like LinkedIn, Facebook, Twitter and Ning have made it easier for recruiters and hiring managers to access a vast and receptive talent pool. Sites offer recruiters a view into candidates’ personalities and work styles that they may never otherwise get from a rsum, cover letter or job interview. Sites also pose a huge legal risk, says Jessica Miller-Merrell, an HR consultant who specializes in social media. Employers aren’t being careful enough with the information they glean about candidates, she says.”]