It's not news that many workplaces ban social networking sites such as Facebook and Twitter, but Aussie bosses seem to be one of the strongest offenders. According to a survey of 1,000 Australian workers by 3, 55% of workplaces bar such services. But we're not taking it lying down: 28% of us hide our screens from bosses to conceal social networking activity, and 17% are skipping lunch breaks to make more Twitter time. Does your workplace ban social networks, and do you work hard to get around it? Share your thoughts in the comments (if you can).