Cameroon again

TJ3TS (5478km) is spotting me again today. He was copying me yesterday too. African stations are few and far between on 10m WSPR, I guess as without a decent internet connection (problematic in some parts of the continent) it is hard to sync time and upload spots to the WSPRnet database?  WSPR seems to be more common in more developed nations.  I think CW is more common as kit is simpler and time synchronization not an issue.