The Google Glass feature no one is talking about — Creative Good:

And this is where our story takes a turn, toward a ramification that dwarfs every other issue raised so far on Google Glass. Yes, the glasses look dorky – Google will fix that. And sure, Glass forces users to be permanently plugged-in to Google’s digital world – that’s hardly a concern for the company or, for that matter, most users out there. No. The real issue raised by Google Glass, which will either cause the project to fail or create certain outcomes you may not want (which I’ll describe), has to do with the lifebits. Once again, it’s an issue of experience.

The Google Glass feature that (almost) no one is talking about is the experience – not of the user, but of everyone other than the user. A tweet by David Yee introduces it well:

There is a kid wearing Google Glasses at this restaurant which, until just now, used to be my favorite spot.

The key experiential question of Google Glass isn’t what it’s like to wear them, it’s what it’s like to be around someone else who’s wearing them. I’ll give an easy example. Your one-on-one conversation with someone wearing Google Glass is likely to be annoying, because you’ll suspect that you don’t have their undivided attention. And you can’t comfortably ask them to take the glasses off (especially when, inevitably, the device is integrated into prescription lenses). Finally – here’s where the problems really start – you don’t know if they’re taking a video of you.