Okay. If that's just food for thought, fine, but if that's an argument for widespread adoption it falls pretty short. In 2011 35% of the world's population were internet users according to a quick wikipedia reference source [1]. That's 2.45 billion people. Taking the 500,000 Dvorak users into account yields 1 Dvorak user out of every 4900 internet users. I realize these are all kind of soft numbers we're throwing around, but I feel my point stands.
[1] FWIW, http://www.itu.int/ITU-D/ict/facts/2011/material/ICTFactsFig...