I think about technology is that everything has its pros and cons, which all relies on the users. Google had only created the tool, and we, the people are supposed to be the ones to use it however they want. That sex app you mentioned wasn’t even made by Google, but by a third party developer, which is part of the users. The computer is, in a way, also the same in which it has its pros and cons that depend entirely on the users.
Also with that promotion point, with any new product, it’s just a way to gain the public’s attention. I think there will be a time when Google does show Glass as a product for charity too (because, let’s face it, donating to charity makes the public think you’re kind and real), but since DVF is quite popular too, it’s no surprise that Google took a step there as well. Plus, it’s advertisement, and the basic point is just to put the product out there.
With all new technology, I think it’s only fair to say that it will take time and a few trial-and-errors before legal and social laws are placed down. Being completely new, people will (of course) feel uncomfortable and skepticism towards it. The TV must have felt uncomfortable when first released too, I mean, moving pictures with sound coming out? That’s insane, sci-fi stuff man. With all new technology, you have to give it time to breathe and develop so that it will become more acceptable on society’s standards. You can never really expect anything to be released and immediately accepted by the users: that’s what feedback is for.
After the phone and the camera, personally, I think Glass is just one step forward from that. There are already small cameras that you can place on your person in a barely noticeable way, and there are those bluetooth receivers for phones already. It’s not too big of a surprise that Glass is coming, and if Google hadn’t developed it first, then other developers (e.g. Apple) would have. Like Apple was known for the iPad, Google is now known as the pioneer in wearable technology, and to be honest, all technology-related companies have the pressure to innovate if they want to be popular. It was only a matter of time, I think.
Obviously I’m a big fan of technology :b