BY JIM CAHILL

In earlier columns, I highlighted the value of online communities and their ability to connect people with similar expertise. The successful communities typically grow into the thousands and have many people actively participating by asking questions, providing answers and linking to interesting information available on the Web.

BY GREG JOHNSON

This nation is crisscrossed by hundreds of thousands of miles of crucial pipelines that transport vital feedstock from sources to the places where it’s transformed into fuel and products. For the valve industry, that translates into millions of dollars of business.