sentences:  Different agencies have experimented with other ways of encouraging participation.For example, at the CIA, managers have held contests for best pages with prizes such as free dinners.Chris Rasmussen, knowledge management officer at the Defense Department's National Geospatial-Intelligence Agency (NGA), argues that "gimmicks" like the Intellipedia shovel, posters, and handbills, encourage people to use Web 2.0 tools like Intellipedia and are effective low-tech solutions to promote their use.