Reid Hoffman invests in networks and companies that, as people get into them, the value is added to their life by the other people in the network. Examples of investments:

• Flickr - photo sharing
• Last.fm - music sharing
• Zynga - game playing
• Facebook - social network

He works and hopes for a society and a set of networks by which we'll make each other better. We learn how to improve ourselves and each other through connections, dialogue, collaboration, and working together. He wants to build services and technologies that allow us to become our better selves as we help each other do so.