They will have stiff competition from BitPesa and a lot of people entering that market now.
The Nigerian people have a bad reputation with some of the biggest scam artists coming from that area of the world.
I have visited the country before and I have also seen a lot of honest people, trying to make a honest living, and I think the remittance service will undercut MoneyGram and Western Union's monopoly and hopefully replace them in future.
The new Oil exploration is bringing a lot of hope to one of the previously poorest nations in Africa.