Eco-tourism is a good idea, and in N Senegal for instance there is a flourishing bird-watching area with many excellent lodges for the tourists to stay. But many countries are unstable and one takes risks visiting them. Most eco-tourists don't want to be kidnapped, raped or murdered on their holiday! Also, nearly all African countries are riddled with corruption at every level.(I don't know about other continents) Maintaining and monitoring conservation programmes is virtually impossible. Money changes hands and rules are 'relaxed' at all levels. My husband says that in his country (Cote d'Ivoire) he feels that only 'the whites' could improve things by strictly enforcing conservation and patrolling reserves themselves. It sounds racist and colonialist, but he should know, and I tend to think he's right.