Yeah, I'm a graybeard sysadmin from Teh Oldz. But a standard issue browser that grabs a quarter GIG of memory just to start up and present a blank window strikes me as criminally inefficient by at least one, and probably two orders of magnitude. You can likely sub out your favorite application for "browser" in the above.

Being an old 55-ish jaded longtime sysadmin: I think that the primary issue is that if you're walking around wearing GG, probably 80% of the people you encounter are going to think that you're an idiot hipster, even if they don't know what it is and the latent privacy issues. Nobody needs to be THAT connected. Pretty sure that simple social ridicule is the biggest barrier to entry for that product, no matter how good. The whole thing has the reek of Executives poking at Newtons in the early nineties. Buy it; dork with it for a couple of months; put it on the shelf and never mention it again.