Alumni networks... Knowledge retention strategy or Social club? #knowledge-retention

Chris Collison <chris@...>

Lots of companies have Alumni Networks for former employees (LinkedIn is full of them!).

Are any of them are really used effectively as a way to access key "retired knowledge and expertise"?
Or do they really just serve a social function (still valued by the members, but not really prized the company)?

Does anyone have any good examples to share, where an organisation is working strategically with its alumni network to continue to involve them and retain access to their know-how?

I'm hoping that SIs are better at this than your average big company...
Grateful for any examples - good or bad.
Many thanks,

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