GM now has a blog for their workers in Europe. It’s kind of like Twitter in 9 languages. This is in addition to their portal of corporate blogs and their newly launched uber-impressive corporate communications social media newsroom called GM Next.

Walmart quietly started a worker-recommendation site called Check Out in December that appears to be actual Walmart buyers posting comments about the good, bad and ugly of the products they are reviewing for their company.

Seems as though the Fortune 10 leaders are figuring out social media for themselves. If I was at the helm of a major agency or holding company with strong ties to the automotive industry, say like Interpublic, I would be re-reading the Kimberly-Clark case study from Good to Great this week.

Power to the people.