Looking for a job? Try LinkedIn or Twitter

LOS ANGELES (Reuters) By Sue Zeidler — Job-seeking in this 21st century recession may just have gone viral and mobile. Since the start of the recession in December 2007, about 6.7 million workers have been laid off according to latest statistics — at a time the popularity of social networking sites such as Facebook, LinkedIn and Twitter have exploded, drawing millions of users per day. As these sites continue to alter social and cultural landscapes, they are also transforming the job search