Bitcoin can help poor countries, because it helps actually their people to get some income online easily. I know many friends from poor countries making a living from earning Bitcoin online ,and it's can increase a new job for poor country ,that job can do by following campaign.
By Campaign do you mean "Signature Campaigns" ? Because I can't call sig campaigns as a kind of job. Yes they are ways to earn online but that is not a kind of job. A job requires training and specialization before you work. Any people that are members here in Bitcointalk can wear a signature campaign provided that they follow the rules. Also what you earn in a campaign is not enough to call it earning for a living.