Through a really excellent article about how the Smithsonian is embracing social media, I ran across their "Fill the Gap" project, in which they used Flickr to engage the public in finding a piece of art from their collection to "fill the gap" to be left by a painting that will go into storage.
This also seems like a really fun learning and community-building strategy to me. In a factory, take a picture of machinery that's broken or that needs improvement and then post it on Flickr for comment and feedback. You could also use YouTube or Vimeo to upload a recorded process or activity to ask for the same thing--"what's wrong with this" or "what could we do differently?" A series of these would be fun, too, related to a similar theme sent out over the course of several days or weeks.
I like the visual aspect, the ability to engage the community and the various possibilities here.
How could you adapt this for a learning activity or project you're working on?