The hotel provided a complimentary mobile phone that guests could use to place local and long distance calls at no charge (a trend I've observed at several properties recently and a pleasant departure from how hotels used to treat in - room phones as major profit centers). (frequentbusinesstraveler.com)
Your book might turn out to be one of those streams, but it is more likely to help you earn other income than to be a major profit center in its own right. (entrepreneur.com)
Higher borrowing costs are reducing homeowners» demand for mortgages, a major profit center for some banks during the early half of 2013, and several firms reported fourth - quarter trading declines in fixed - income, currencies and commodities trading. (news-to-use.com)