The neighborhood you lived in would have people moving constantly in/out of nearby houses. You could kick people out if they don't interest you enough or are rude to you, but be careful how you interact with others – the ability to boot people from your neighborhood could be turned against you as well.
- You could wake up in the middle of the night (or pretty much anytime, for that matter) and immediately see what your friends have been up to recently. Unless they've made efforts to hide it from you, of course…
- The Neighborhood Watch program's goal would be to introduce you to the best of the neighborhood.
- You could cruise the neighborhood at will, but in order to get out of your car and actually talk to someone, you would need to "identify" yourself. This would lead to a lot less door-to-door salesmen, and the few you find would get kicked out of the community as soon as you reported them to the authorities.
- You could spy on your neighbors whenever you wanted, without their knowledge (unless they were keeping an eye out for stalkers.)
- Starting a conversation with someone that interests you would be as easy as instant messaging them "Hi", without any regard for geographic locations, times of day, or IM usernames. However, for now, you better keep track yourself of what you've said privately to someone else, because nobody else is going to do it for you.
- There would be tons of cliques around, but unlike the cliques you saw in high school, these would welcome new members who share the same interest. Plus, you can co-exist in two cliques at once without anyone calling you out on it (usually).
- You could spend all day sitting at home on your couch in your pajamas while you talk to countless people, and nobody would know (or care!)
- Your photo albums would be simultaneously displayed on your mantle and in every other house in your neighborhood.
- You could find out pretty much immediately what someone thinks about your thoughts – although you might have to go somewhere special to hear all of their opinions, if they're especially verbose.
- Every day, you would get a visitor coming to your door to ask you a new question, or urging you to show off something you have or can find on a specific topic.
- You could scan for people's thoughts on a specific topic, as long as they made an effort to label their thoughts with the key-words you're searching with. Or you could just browse haphazardly and find something that captures your imagination.
- If you're handy with your mobile phone, you could be at home even when you're not near your house.
- There would be a group of concerned citizens (probably also neighbors of yours!) who are constantly working to improve your life and make it easier for you to do the things you want to do.
Any others I've missed?