There's a blizzard of metrics that social sites and messaging sites put out there.

The next time you're driving from New York to Boston on I-95, you should make a little detour in Pawtucket, Rhode Island, to visit the Old Slater Mill national historic landmark. It's the site of what is considered to be the first successful water-powered textile spinning mill in America.

You have giant Facebook, which wants people to be more engaged, and they also want to grow and trade different things, including content.

Walt Mossberg Quotes