Who Knows Whom, And Who Knows What?.
Social network analysis (learning network analysis?) is really the key to the interaction aspect of formal and informal learning - Who Knows Whom, And Who Knows What?: "Companies that have been frustrated by traditional knowledge management efforts, such as Mars, are increasingly looking for ways to find out how knowledge flows through their organizations. Looking at the company org chart, it turns out, often doesn't tell the real story about who holds influence, who gives the best advice and how employees are sharing information critical for success. This all takes on greater urgency as millions of baby boomers prepare to retire over the coming decade. Social network analysis provides a clear picture of the ways that far-flung employees and divisions are working together, and can help companies identify key experts in the organization."
[elearnspace]