I appreciate that you need to consider things from a business point of view, Jandré ... but why not apply your efforts where they are needed the most?
You ask a very good question Geoff.
The original request for collaboration is pragmatic by nature whereas the needs identified from requests out of Africa is a reality check at a minimum and requires a very different energy.
So when I'm mentioning "filtering participants" it is simply a way to say that the requests to participate that comes through from most African sites for a collaboration has nothing to do with software and is more an outreach for help. Either in terms of equipment needs or practical assistance.
Unfortunately I don't have the capital means of an Oxfam or a USAID.. All I can do is steer them in the right direction to have their needs fulfilled.