If I could add something to this list, it would be to stop judging people (sounds religious) because everyone is different. Hence, surrounding yourself with different people makes you realize new markets, and helps you come up with different ideas. Most people have a simple side to them so identify it, and mass produce their simple solutions in a concrete fashion.
Smiling usually helps in the initial introduction to meeting different people :)
Congrats guys. Google+ saw a trend within small groups and decided to enter that market. However, I would assume small groups aim to limit your time spent with those who aren't as close to you. Now, I have tons of circles, and connecting with even more people than ever. Its organized well, but whats the point? Facebook has Lists right? Buying out Fridge and growing a community from the ground is a much better/sustainable strategy for google. Just an opinion :)
Smiling usually helps in the initial introduction to meeting different people :)