Wear it and expect to be ignored. Let's face it, you're gonna get some questions. Be patient and explain that Glass has a lot of the same features as a mobile phone (camera, maps, email, etc.). Also, develop your own etiquette. If you're worried about someone interrupting that romantic dinner at a nice restaurant with a question about Glass, just take it off and put it around the back of your neck or in your bag.
Be creepy or rude (aka, a “Glasshole”). Respect others and if they have questions about Glass don't get snappy. Be polite and explain what Glass does and remember, a quick demo can go a long way. In places where cell phone cameras aren't allowed, the same rules will apply to Glass. If you're asked to turn your phone off, turn Glass off as well. Breaking the rules or being rude will not get businesses excited about Glass and will ruin it for other Explorers.