[cliveowen]

As far as I can tell, all the mentioned scenarios address pretty niche markets.

Personally I don't see mass adoption of Google Glass in any kind of conceivable future, I see head-up displays in very specific settings as the winning solution, instead of an always on, general-purpose solution.

[dualogy]

> niche markets

--or maybe we end up in a future like this: http://www.businessinsider.com/what-back-to-the-future-2-got...

[lehrblogger]

Aren't the mobile photo sharing and messaging markets both large and established? Past technologies that have made those tasks slightly faster or easier have seen widespread adoption, and it seems possible the same thing could happen with Glass.