Almost half of employers have rejected a potential worker after finding incriminating material on their Facebook pages, research has found.
Bosses are now using the popular social networking site as a tool to double check how likely it would be that their new worker would take a sick day for being hungover or on drugs the night before.
And job seekers were being found out for lying about their qualifications, with employers checking their Facebook pages to see if their online details matched their resume.
One in 10 were knocked back for boasting about drinking and drugs online, 13 per cent were vetoed for making racist comments and nine per cent were overlooked for placing racy photos on their Facebook page.
Big Brother employers reported the biggest online mistake that job seekers made was lying about their qualifications but having their real academic record available for all to see on line.
There were 38 per cent of job seekers knocked back for boosting up their qualifications on their resume and then getting caught on Facebook.
Examples of online posts that have caught employers' eyes include:
* Employee X "wishes his desk was near the television to watch the cricket at work
* "It's one para weekend for me".
* "Tramp related hangover"
More than four in 10 employers discarded a job seekers resume after checking their Facebook page, a survey of 450 employers for careerbuilder.co.uk found.
Career Builder president Farhan Yasin(ok) said job seekers could have all the skills needed for a job but fail to secure their dream job because they had been sloppy about what they posted online.
"More employers are now using social networking sites to uncover any digital dirt," he said.
"Job seekers are urged to be mindful of the information they post online. They are indirectly communicating with potential employers.
Mr Yasin said social networking sites like Facebook could be a bomb waiting to go off in the background checks employers do on potential recruits.
"Social networking is a great way to make connections with potential job opportunities in 2010 and to promote your brand across the internet," he said.
"Make sure you are using this resource to your advantage by conveying a professional image and underscoring your qualifications."
Mr Yasin said there were simple things job seekers could do to protect themselves from prying employers' eyes online.
"Clean up digital dirt before you begin your job search. Remove any photos content, and links that can work against your in an employers' eyes," he said.
"Consider creating your own professional group on sites like Facebook to establish relationships with business leaders, recruiters and potential referrals."
Mr Yasin said no employer likes whinging employees.
"Keep your gripes offline. Keep the content focuses on the positive, whether that relates to professional or personal information. Make sure you highlight specific accomplishments inside and outside work," he said.
"Don't forget others can see your friends, so be selective about who you accept as friends. Monitor comments made by others and consider using the block comments feature or set your profile to private so only designated friends can view it."
Thanks to the Daily Telegraph for this article.
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