Doctape is out to distinguish itself in the tough market of cloud storage. To become more than a retailer of disk space in the sky, Doctape is thinking about how to make your storage useful. And it's vision for doing that may well be enough to carve out a niche in what otherwise looks like a flat marketplace where players are in a simple dog fight for market share. Just as Apple sold computers like every other electronics company yet held some crucial differences that allowed it in the end to overrun its competition, Doctape has similarly unassuming differences that, taken together, could be a game changer.