You get a visit by someone you've never met before. You're invited on an all-expense paid trip to your country's biggest city for a two-day meeting on natural gas policy.
Oh, and if you show up you get a free cellphone!
It might sound sketchy. But it's actually an innovative strategy that is being tested by researchers at a Washington, D.C.-based think-tank, the Center for Global Development, or CGD, to help the African nation of Tanzania decide how to spend its expected windfall from new discoveries of natural gas.