The comment is general. The intersection is a tiny slice from each of two larger communities. There's no obviously good way to reach it with a marketing push and engage it enough to create a critical mass. StackOverflow works because it is so general and solves immediate workaday problens, but many many StackExchange sites have failed. Building community is a hard problem.
Have you listened to the StackOverflow and StackExchange podcasts?
This is true. I haven't checked out the podcasts - will definitely do that!
The only other idea I've been tinkering with is an 'Elance for hardware' type of gig where hardware and software developers join forces to work on someone else's project. (Say John Smith posts a project to have two arduinos communicate using WiFi Direct and he is seeking help and willing to pay $350 to have someone work with him in parallel and speed up the project.
So we'd help teams find resources, talent, and example projects to help with products or concepts that they're trying to create. Still playing around with ideas. Thanks again for the podcasts!
Have you listened to the StackOverflow and StackExchange podcasts?