Most people think of a secretary or an administrative assistant as the person who answers the phone, sends out mail and handles scheduling. In many places, this is still true. But some companies have made the switch to virtual offices (see Google, Zynga) where their employees live virtually but interact with clients virtually. Its not just call center staff; its also in sales and customer support. As teams get bigger and more sophisticated, theres a need for more people to help manage projects or join teams based on expertise outside what is usually being done by the typical office employee.