g. Twitter, Facebook, and LinkedIn Corp. (LNKD) have gained so much traction as online marketing tools that major firms like Morgan Stanley (MS) and Bank of America's (BAC) Merrill Lynch have begun allowing employees to use them in their work. Morgan Stanley said Wednesday it would roll out LinkedIn's career and socializing service and Twitter, the popular micro-blogging service, to 600 of its financial advisers in its Morgan Stanley Smith Barney brokerage joint venture in June. The firm, which will allow advisers to share preapproved status updates and tweets, expects to make the social networking sites available to the rest of its 17,800-member advisory force within six months. A Bank of America spokeswoman told Dow Jones Newswires on Wednesday the firm has advisers with full capabilities on LinkedIn. The Financial Industry Regulatory Authority, Wall Street's self-regulatory watchdog, requires static communications, such as advertisements, to be approved by a company representative licensed by regulators to approve sales materials. Interactive content, which covers most emails as well as tweets, posts and texts on mobile phones, doesn't need to be preapproved, but has to be supervised. Companies have to keep records of both types of content for at least three years. Massachusetts has asked for responses by June 8. The Secretary of the Commonwealth, William Galvin, has beenillion to deliver and maintain 20 high-speed trains for Polish railway operator PKP Intercity. The contract will run for 17 years and includes the construction of a maintenance workshop. The first train, designed to travel at a maximum speed of 250 kilometers an hour, is to be delivered iest deal, if it goes through, could entail HCL Technologies taking over the business and staff involved in researching and developing products for Xerox and provide the same as services to the U.S. company, say analysts. Xerox has informed its "selected employee groups," in five locations across the world, "to let them know the steps we're considering," Bill McKee, a company spokesman, said in response to an emailed query from Dow Jones Newswires Tuesday. As part of the plan, yet to fructify as a deal, a few hundred Xerox employees will move into a team of HCL Technologies, he said. "We have great skills and talent in our organization; yet, we don't have the scale necessary to be a leader in all areas. It becomes increasingly clear that to win, we have to partner with other industry leaders," he said. But he didn't specify any financial details or when a deal is likely to be finalized. HCL Technologies said it didn't have any comments to offer on the matter. Engineering and research and development services form about 18% of HCL Technologies' s overall revenue. India's fourth-largest software exporter by sales gets more than half of its revenue from t