Who do you go to when you've got an industrial networking problem that you can't solve on your own? These days, more control engineers are getting input from a world of experts through social media tools such as LinkedIn, Facebook, Twitter and other forums, as Executive Editor Jim Montague details in this quarter's cover story of Industrial Networking. Also in the Q4 issue: Discover how to build with modular I/O; hear a system integrator's complaint about how the latest PLCs and software are still mind-bogglingly complicated and expensive; and revisit five common problems – and solutions – with wiring and connections.