Someone could be offended if they considered it something other than educational (sexual, religious, political). That's highly subjective, though, which is why

Someone could be offended if they considered it something other than educational (sexual, religious, political). That's highly subjective, though, which is why most companies have policies to use company resources only for official use. Also, depending on the workplace, some people might get pissed by seeing their coworkers idly browsing the web at work.