Yeah, MEGA is different, but that won't matter if people don't want to stick with it. Also, MEGA's customer support sucks (although that's completely forgivable seeing its the first week).
MEGA needs a desktop client, and to fill out basic features and profile settings. For example, last time I checked, I couldn't change my password. There is no way to do it.
One more thing. Kim has an amazing artistic sense. I wish there was more of that kind of brash yet polished aesthetic he is known for with MEGA.