Next week ZET will either go to the moon and stay there, or die. If all rumours turn out to be true ZET will have accomplished something great and their team deserves nothing but credit for it. All alts will benefit from it. But I don't think ZET will be considered a luxurious coin when being used on mobile phones in Africa...
That is the speculation, but to see what I mean, have a look at the website for Zetacoin and the image they present. If they were to come up with some link to a fashion outlet or something it wouldn't be a big surprise. The Blackcoin website on the other hand, there aren't many clues that tell you what its purpose is.