According to that website, the crooks that robbed me in the UK stole the basic school education of an entire generation from 5 angolan villages.
Bastages!
Besides, a goodly portion of those that site says I make more than, would rather live in their mud huts and kill me as a heretic than join modern society and actually work WITH others to improve their lot in life. They are born, raised, and die knowing that any life other than their mud huts and religious warfare is true heresy and must be fought against at all costs.
I feel little incentive to make more than one offer of a better life to a savage. Offer once. If it's refused, let them keep their squalor. They'll probably be happier that way and who am I to force civilization into their lives? Offer a better way (the way that worked for me and those like me) once. If they take it, fine. If not, I figure it's probably immoral to force them out of their traditions.
That said, offering true asylum is an important part of that. If you offer civilization to a family and only the oppressed woman says "save me", you damn well better save her 'cause she's gonna get beaten the second you turn your back if you leave because of what her uncultured man said.
I recall some sci-fi stories about that... A society is trapped on a planet with no metal and a sun that is going unstable. Aliens show up, make the offer. Anyone who says yea gets whisked away to a better planet (which they'll have to build up themselves, but TANSTAFFL, eh?) Even after the planet leaders are convinced of their dire situation, the people on the planet end up attacking the aliens and the aliens take a bare handful of open-minded people away, leaving the savages behind to roast or freeze, complaining about how it was everyone else's fault they're screwed.
Sounds a bit like the middle east... There is a way out, but even though the natives see the writing on the wall (oil gonna run out eventually), they're still refusing assistance because their religion tells them that everyone else is unclean and accepting help or a different way of life will damn them to hell. So I figure, make the offer once and then forget about it. When they want help, they'll ask. And it better be nicely too.