A farmer does not know how to read well, and he does not know how to read the complicated stuff that is written in the west about farming.
The people in the developing world who use twitter are not using it for research or anything like that, they are usuing it to see what Chris Brown and Lady Gaga are up to. Yes, seriously, go on twitter and search for your appropriate third world members.
You know why? It's because this is a young person medium. Some dude who has been farming his whole life is not going to start twittering suddenly. Young people will, but then they will look for what young people care about.
Your idea is idealistic, but ultimately pointless. The 3rd world is developing but they are interested in messaging (Blackberry Bold), SMS, mobile pages. Not really in twitter or in talking to some people who barely understand them, or reading some academic papers they don't understand.
I don't think you understand your audience. You really think a person who is advanced enough to understand twitter needs a hand-crank? That's a bit silly, is it not? The third world has power supplies - how are all those billions of mobile phones being charged?