Last October, General Motors (GM) tiptoed into the blogosphere, quietly launching a blog to coincide with the 50th anniversary of its small-block V-8 engine -- the high-performance roar behind decades of Corvettes, Camaros, and other muscle cars. The company's virgin blog has attracted a small, happy group of gearheads who write lovingly about power-train codes, horsepower modifications, and other riveting under-the-hood topics. "It was a safe group for us," admits Michael Wiley, GM's director of new media.

Read more...