For Companies, a Tweet in Time Can Avert PR Mess

A growing number of businesses are tracking social-media outlets such as Facebook and Twitter to gauge consumer sentiment and avert potential public-relations problems.

Taxiing Advertising in China

Shanghai taxis transport 90 million riders per month. Passengers sit in traffic an average of 18 minutes. Shanghai-based advertising company Touchmedia says those are the ingredients that have helped it raise around $40 million from investors, including a just-completed funding round over $14.6 million in the midst of the young Chinese venture capital industry’s toughest period yet.