Hi Mobilexcetera and All,
I am not a Nigerian, but the Nigeria's mobile applications market fascinates me and I would appreciate if you could answer these questions below to better understand the market for this excellent app Idea.

1. Can you roughly estimate the number of users for such an app? (if it's free and built in the best possible way)
2. How many android users are there in Nigeria?
3. What about cross-platform solution for iPhones and blackberry as well? (for example: html5+phonegap)
4. What about cellular-data, is it fast enough and inexpensive enough everywhere? (such a real-time responsive app would probably provide many pictures and must be available everywhere)
5. Do you have an example of another popular Nigerian smartphone online service?

Thanks and good luck!