jedisco: I would suggest creating an app that will suit our needs as Nigerians.

I know this may be out of your purview, but why not create a fully featured app for a Nigerian site like Nairaland. (maybe in partnership with Seun).
I mean one with a nice interface that allows for full functionality and may even be able to detect if ones post is quoted and an option to dislike comments (this would first have to be implemented on NL).
You can also attach social services to it that would enable instant messaging, room chat e.t.c just like 2go without necessarily divulging ones identity.

There might also be room for moderate ads to serve as some reward.
Lastly, if you're going to make such an app, you should start with BlackBerry and then Symbian with also a java version before moving to Android and iOS. Reason being that such apps thrive on user-base and the BB, Symbian and java phones still dominate the Nigerian market. You may need to partner with those conversant with other OSes