Everybody seems struck by (and worried about) the flight of talent from Google, either to other (younger) high-profile companies such as Facebook, or to the next generation of venture-funded startups.

I don’t have any specific advice for Google, but concerns about the “brain drain” create an opportunity to offer a bunch of lessons for organizations everywhere about the new battle for talent. Here’s an essay I just did for HBR. I hope it doesn’t drain your brain!