For me the opportunity is for an app that would allow a small group (e.g. of founders) to create an integrated view of their contacts: answer the question who k

For me the opportunity is for an app that would allow a small group (e.g. of founders) to create an integrated view of their contacts: answer the question who knows someone at X? But I agree with gnaritas that turning over the keys to your on-line identity was too big a step for me. Which argues, I guess for a distributed model that could share results.