A recent survey found that over a third of HR professionals have visited social networking sites to look for information about employment candidates. Personal info and videos posted on Facebook, Twitter, YouTube and other sites are now considered fair game when employers conduct "background checks" on job seekers. With concerns about office security, employee theft and malicious behavior on the rise, companies want to learn as much as they can about the character of a job seeker, in addition to their capabilities on-the-job.
However, this assessment isn't limited to social media, but also applies to every interaction you have with a company online. To put it another way, your evaluation begins with the first email you send, and continues through every communication you have with HR and the company as a whole. From an employer's perspective, you are what you write.
Courtesy of CareerCast.com