Expand — and engage — the edges of your social network. You're probably on Facebook, LinkedIn, or some other social network by now. But how adventurous are you there? Serendipity works best when we extend the edges of our social networks. People on these edges represent "weak ties" connecting us to new insight, experiences, and capabilities that provoke us to improve our own game. Over time, these edge connections become part of our core network, transforming that core in deep yet unexpected ways.

Participate in spikes. As we begin to pursue our passions, something remarkable starts to happen. While a few of us will choose to remain in, or even migrate to, remote geographic areas because of our passion for certain physical locations, many more of us will be drawn to emerging spikes of complementary talent in densely settled geographic areas. Social networks in virtual space will amplify the forces of pull being generated in spikes as our passions motivate us to seek out people who can help us get better faster.

Maximize return on attention. Hearing these recommendations, some readers will ask how any of us will have enough time to expand our networks and explore talent spikes. Aren't we time-constrained already? Yet by adopting new tools and services we can all improve our "return on attention" — the value we get in return for the time spent looking for what we want and need. Search tools help improve this value immensely. But serendipity tools may prove even more helpful as they connect us to people and resources we don't yet know exist.

What about you? Would you accept a "friend" request on a social network from someone you'd never met? In what ways have you noticed serendipity at work in your own life and career? Have you found ways to shape serendipity to increase the quantity and quality of unexpected encounters?